Re: [9fans] fyi: plan9port & el capitan
ahh, thanks. 2015-10-08 20:32 GMT-04:00 Ryan Gonzalez : > The newest OSX version: http://www.apple.com/osx/whats-new/. > > On October 8, 2015 6:57:15 PM CDT, Hugo Rivera wrote: >> >> Who is el capitán? >> >> 2015-10-08 19:06 GMT-04:00 marius eriksen : >>> >>> works great. and the split view feature is fantastic with full screen >>> acme. >> >> >> >> > > -- > Sent from my Nexus 5 with K-9 Mail. Please excuse my brevity. -- Hugo
Re: [9fans] fyi: plan9port & el capitan
Who is el capitán? 2015-10-08 19:06 GMT-04:00 marius eriksen : > works great. and the split view feature is fantastic with full screen acme. > -- Hugo
Re: [9fans] Gawk in 9front-ports
Arnold, I am not sure who I am addressing either :-) Just wanted to know where this gawk port was heading. The thing is that I use a slightly modified version of Plan 9's awk. In this version, I added all the math functions from C and replaced the random number generator by the Mersenne twister. As a comment, from my experience gawk is generally faster than Plan 9's awk, but I believe the latter is more reliable (it crashes less often than gawk). Please, let me (us) know about the future of awk in 9front. 2015-07-09 4:49 GMT-04:00 : > Hi Hugo. I'm not sure who you're addressing. Jens did the port. > I maintain gawk. > > Removing bloat unfortunately isn't going to happen in the mainline > code base since there are backward compatibility issues. > > However, I'm happy to incorporate portability changes to make porting > to Plan 9 easier, if they're reasonable. > > HTH, > > Arnold > > Hugo Rivera wrote: > >> Let me understand. Are you going to modify the current gawk version >> according to your needs (perhaps removing some of the bloat you >> mention)? or are you going to port gawk as it is? >> >> 2015-07-08 2:22 GMT-04:00 : >> > Hugo Rivera wrote: >> > >> >> Why do you want gawk on plan9? >> > >> > I appreciate knowing about portability issues. :-) >> > >> >> I use awk a lot (on plan9 and elsewhere) and I wonder what reasons do >> >> you have to use gawk over plan9's awk. >> > >> > Many features and extensions over standard awk. Different people will >> > assign different levels of value to said features and extensions. >> > A partial list: >> > >> > - The previously discussed dynamic plug-in facility >> > - And awk-level debugger >> > - A statement count profiler (and a pretty printer) >> > - True arrays of arrays >> > - Many more built-in functions and variables. In retrospect, some of these >> > are just bloat and I'd have been better off without them. >> > >> > Arnold >> > >> >> >> >> -- >> Hugo > -- Hugo
Re: [9fans] Gawk in 9front-ports
Let me understand. Are you going to modify the current gawk version according to your needs (perhaps removing some of the bloat you mention)? or are you going to port gawk as it is? 2015-07-08 2:22 GMT-04:00 : > Hugo Rivera wrote: > >> Why do you want gawk on plan9? > > I appreciate knowing about portability issues. :-) > >> I use awk a lot (on plan9 and elsewhere) and I wonder what reasons do >> you have to use gawk over plan9's awk. > > Many features and extensions over standard awk. Different people will > assign different levels of value to said features and extensions. > A partial list: > > - The previously discussed dynamic plug-in facility > - And awk-level debugger > - A statement count profiler (and a pretty printer) > - True arrays of arrays > - Many more built-in functions and variables. In retrospect, some of these > are just bloat and I'd have been better off without them. > > Arnold > -- Hugo
Re: [9fans] Gawk in 9front-ports
Why do you want gawk on plan9? I use awk a lot (on plan9 and elsewhere) and I wonder what reasons do you have to use gawk over plan9's awk. 2015-07-06 22:37 GMT-04:00 Jens Staal : > There was a recent discussion about that it would be nice to have gawk on > Plan9. > > The latest upstream version of gawk can now be built via 9front-ports. I > think/hope I built/ported it correctly, but it would be nice with > critique/feedback/testing. > > I noticed in the Arch linux package that gawk comes with a couple of dynamic > libraries and a header. Are those also interesting to include in the Plan9 > package (then as static libraries ofcourse)? -- Hugo
Re: [9fans] p9p on openbsd/amd64
I did not know that. Thanks a lot. 2015-07-06 20:32 GMT-04:00 : >> Hi, >> I am using p9p for some time now, and I find very difficult to work without >> it. >> I have a box with openbsd/amd64 installed and I would like to have p9p on it. >> Can someone explain to me, in a more or less detailed fashion, what >> should I do to compile and run p9p on such machine? >> I wrote many c programs in my life, some of them useful for myself, >> but I do not know how to port software. >> Saludos, > > Plan9port is in the OpenBSD ports tree. You can either install the package > or build the port from source. > > More information here: > > http://www.openbsd.org > > sl > -- Hugo
[9fans] p9p on openbsd/amd64
Hi, I am using p9p for some time now, and I find very difficult to work without it. I have a box with openbsd/amd64 installed and I would like to have p9p on it. Can someone explain to me, in a more or less detailed fashion, what should I do to compile and run p9p on such machine? I wrote many c programs in my life, some of them useful for myself, but I do not know how to port software. Saludos, -- Hugo
Re: [9fans] lost vac score
great, it works. Thanks 2014-08-25 15:57 GMT-04:00 David du Colombier <0in...@gmail.com>: >> I've lost my last vac fingerprint and I am unable to unvac anything. >> How do I recover it? > > You can run the dumpvacroots script which will > dump all the Vac scores from your Venti server. > > /sys/src/cmd/venti/words/dumpvacroots > > -- > David du Colombier > -- Hugo
[9fans] lost vac score
Hi, I've lost my last vac fingerprint and I am unable to unvac anything. How do I recover it? Gracias de antemano. -- Hugo
Re: [9fans] c++
Great, you have my admiration, for what's worth. I truly mean that, no sarcasm or anything alike. It would be much better if I could offer my support instead, and maybe some day I could try to do something similar as you are. 2012/11/22 : >> Of course, it depends on the problem considered. But I think the big >> problems in the world have little to do with programming languages, >> particularly c++, which is the topic at hand. > > Well, in the unequal world of long-post-apartheid rural South Africa > where I live, my hope is to teach unspoilt, but also uneducated kids > programming using Go on a Plan 9 platform (the teaching, mostly). > Doing the same in C++ or Java would demand much more effort on my part > and much more powerful resources than I have at my disposal. > Eventually, we may get over these obstacles, but by then I'm hoping > the ability to solve problems using Go will already be an asset for > the kids. > > Am I delusional? Maybe, but it's worth a try. > > ++L > > -- Hugo
Re: [9fans] Acme: the way the future actually was
I knew it because I read the paper :-) 2012/9/14 erik quanstrom : > On Fri Sep 14 10:12:24 EDT 2012, charles.fors...@gmail.com wrote: > >> Probably never heard of Oberon either. > > neither is knowledge of oberon ubiquitous among 9fans, who may > not realize that acme itself is a copy. > > - erik > -- Hugo
Re: [9fans] the `Look' command in Acme
True, but I think he refers to remove it from the tag only, since every time you have to use a Look command you have to retype it followed by the pattern. 2012/5/17 Lucio De Re : >> i've removed the `Look' command from Acme's tag, as i found no use for it. >> anything i'm missing? > > It's a convenient mechanism to search for patterns that may be > misinterpreted. I use it a lot when the pattern I'm looking for > happens to match a filename. > > ++L > > -- Hugo
Re: [9fans] trailing newline in awk
Seems impossible to do in awk, but I could be wrong. In ssam is easy: % ssam -ne 'y/.+\n/p' file prints the last line if it's missing the line feed. 2012/1/26 dexen deVries : > hi list, > > can't wrap my head around this: in an awk script, how to take some action if a > file lacks last trailing Line Feed? > > i want to modify files with contents like: > text LF > text LF > text > > and leave undisturbed files with content like: > text LF > text LF > text LF > > in other words, i want to either: > - match line that is empty and is last line of file (awk doesn't seem to take > any action on such line), or, alternatively, > - match a line that is last line of file and lacks terminating LF. > > -- > dexen deVries > > [[[↓][→]]] > > Already many of the mutants disguised as human beings are walking the streets > of Earth's cities. > -- Music Instructor, ``Electro City'' > -- Hugo
Re: [9fans] venti backup
OK, thanks a lot for your help! 2012/1/20 David du Colombier <0in...@gmail.com>: >> Does the presence of the trailer imply that I should add an extra >> block to the arenas backup? >> If my last arena is >> >> arena='arenas059' [31676186624,32213057536) >> >> then I should backup 32213057536+8192 bytes instead of 32213057536? > > No, the trailer is located at the end of the arena, > just after clump info. > > The second number you see is the start of the next arena. > It is preceded by two blocks: > > - the arena header of the next arena, > - the arena trailer of the precedent arena. > > 32213057536/8192 = 3932258 > > In you example, arenas060 start at 3932258, so the header of > arenas060 is 3932257 and the trailer of arenas059 is 3932256. > > You should really backup from 1048576-8192 (start of arenas00, > including header) to 32213057536-2*8192 (end of arenas059, > including trailer). > > Like many Venti tools, checkarenas check each arena header > and trailer and verify they match. So you should be confident. > > -- > David du Colombier > -- Hugo
Re: [9fans] venti backup
Does the presence of the trailer imply that I should add an extra block to the arenas backup? If my last arena is arena='arenas059' [31676186624,32213057536) then I should backup 32213057536+8192 bytes instead of 32213057536? 2012/1/20 David du Colombier <0in...@gmail.com>: > This is because each arena have an header (ArenaHead) and a trailer > (ArenaTrail) we would like to copy. The header, in particular, is located > just one block before the start of the arena. > > -- > David du Colombier -- Hugo
Re: [9fans] venti backup
Thanks a lot, David, for your detailed reply. I've followed your indications and now I am able to recover from my venti backup :-) I must confess that I am puzzled, because some sizes and most seeks for dd are off by 1 block from what I expect. Particulary, why do you % dd -if arenas2.img -of arenapart -bs 8192 -count 97 % dd -if arenas1.img -of arenas -bs 8192 -iseek 97 -count 65536 when the first arena starts after 98 blocks from the beginning of the file? 2012/1/20 David du Colombier <0in...@gmail.com>: >> that's only 98 blocks of 8192 bytes, not 128 as you mention. > > Sorry, I got confused. It's 98 blocks on arena partition and > 128 blocks on isect partition. > > I just tried. This is what I did. > > The goal is to manually recopy the first arena from > the first Venti (arenas1.img) to the second Venti (arenas2.img). > > It will work for you as long as you adjust the partition > names, the number of arenas and the sizes. > > # first venti > > % dd -if /dev/zero -of arenas1.img -bs 8192 -count 131072 > % dd -if /dev/zero -of isect1.img -bs 8192 -count 16384 > % dd -if /dev/zero -of bloom1.img -bs 8192 -count 8192 > % venti/fmtarenas arenas arenas1.img > % venti/fmtisect isect isect1.img > % venti/fmtbloom bloom1.img > % echo 'index main > isect isect1.img > arenas arenas1.img > bloom bloom1.img' | venti/conf -w arenas1.img > % venti/fmtindex arenas1.img > % venti=127.1 > % venti/venti -c arenas1.img -m 20 -h tcp!127.1!8000 > % vac /sys/src/9/pc > % hget http://127.1:8000/index > index=main version=1 blocksize=8192 tabsize=524288 > buckets=16287 div=263706 > sect=isect for buckets [0,16287) buckmax=215 arena=arenas0 at index > [1048576,537903104) > arena='arenas0' on arenas1.img at [802816,537673728) > version=5 created=1327069595 modified=1327069627 > written: clumps=669 compressed clumps=600 data=4,251,763 compressed > data=1,174,341 storage=1,216,488 > indexed: clumps=0 compressed clumps=0 data=0 compressed data=0 storage=0 > % venti/sync > % Kill venti | rc > % bc > 802816/8192 = 98 > 537673728/8192 = 65634 > 65634-98 = 65536 > > # second venti > > % dd -if /dev/zero -of arenas2.img -bs 8192 -count 65633 > % dd -if /dev/zero -of isect2.img -bs 8192 -count 16384 > % dd -if /dev/zero -of bloom2.img -bs 8192 -count 8192 > % venti/fmtarenas arenas arenas2.img > % venti/fmtisect isect isect2.img > % venti/fmtbloom bloom2.img > % echo 'index main > isect isect2.img > arenas arenas2.img > bloom bloom2.img' | venti/conf -w arenas2.img > % venti/fmtindex arenas2.img > % dd -if arenas2.img -of arenapart -bs 8192 -count 97 > % dd -if arenas1.img -of arenas -bs 8192 -iseek 97 -count 65536 > % cat arenapart arenas > arenas2.img > % rm -f arenapart arenas > % venti/buildindex -b arenas2.img > 0 clumps, 16,287 buckets > 2012/0120 14:29:29 read index > venti/buildindex: brand-new index, no work to do > 2012/0120 14:29:29 arena arenas0: 669 entries > % venti=127.1 > % venti/venti -c arenas2.img -m 20 -h tcp!127.1!8000 > term% hget http://127.1:8000/index > index=main version=1 blocksize=8192 tabsize=524288 > buckets=16287 div=263706 > sect=isect for buckets [0,16287) buckmax=215 arena=arenas0 at index > [1048576,537903104) > arena='arenas0' on arenas2.img at [802816,537673728) > version=5 created=1327069595 modified=1327069627 > written: clumps=669 compressed clumps=600 data=4,251,763 compressed > data=1,174,341 storage=1,216,488 > indexed: clumps=0 compressed clumps=0 data=0 compressed data=0 > storage=0 > > Honestly, I think you should just use venti/wrarena to write > backed up arenas to a running Venti. It's much easier. > > -- > David du Colombier > -- Hugo
Re: [9fans] venti backup
There's something weird going on. First checkarenas reports % venti/checkarenas -v /dev/da1s4 arena='arenas00' [802816,537673728) version=5 created=1265030300 modified=1265248834 sealed score=f383ebf9edefe8d37733c8caba6ff53e8b5517b0 clumps=82,908 compressed clumps=22,812 data=669,897,790 compressed data=531,617,136 disk storage=536,840,340 that's only 98 blocks of 8192 bytes, not 128 as you mention. Anyway, I run fmtarenas on fa and then if I % 9 dd -if /dev/da1s4 -of fa -bs 8192 -iseek 98 -oseek 98 -count 65536 or % # this doesn't make sense but I've tried it, nevertheless % 9 dd -if /dev/da1s4 -of fa -bs 8192 -iseek 128 -oseek 128 -count 65634 I get 2012/0120 11:57:10 err 2: arena set has wrong magic number: expected ArenaPartMagic (0xa9e4a5e7) venti/buildindex: can't init venti: can't initialize venti: fa: arena set has wrong magic number: expected ArenaPartMagic (0xa9e4a5e7) when I run buildindex, and checkarenas says the same thing. 2012/1/20 David du Colombier <0in...@gmail.com>: > To clarify things. > > You backup is correct, but it's not necessary to backup the > first 128 blocks of the arena partition. Its only contains > the Venti configuration and the ArenaPart structure. > > Here is an example of what I described in my precedent message. > > Create an arena partition at least as big as your original > one, and format it: > > % dd -if /dev/zero -of arenas.img -bs 8192 -count 4194304 > % venti/fmtarenas arenas arenas.img > > Then copy your Venti arenas from the beginning of arenas00 > (128*8192) to the end of arenas059 (3932258*8192): > > % dd -if /dev/da1s4 -of arenas.img -bs 8192 -seek 128 -oseek 128 -count > 3932258 > > Of course, '/dev/da1s4' can be 'fa' in your example. > If you removed the first 128 blocks, you don't have > to use '-seek'. > > Finally, write the Venti configuration, rebuild the index > and Bloom filter, and start Venti. > > -- > David du Colombier > -- Hugo
Re: [9fans] venti backup
Just to make sure I could rebuild things in case I should, I've tried to recover everything from my backed up arenas, but I failed. I am not sure if things go wrong because the backup per se is wrong or I am making a mistake while recovering from the backup (or both). So this is how I create the back up of my active arenas % venti/checkarenas -v /dev/da1s4 output supresed arena='arenas059' [31676186624,32213057536) version=5 created=1326893834 modified=1326893851 clumps=34,617 compressed clumps=17,908 data=274,318,099 compressed data=198,689,879 disk storage=200,870,750 % 9 dd -if /dev/da1s4 -of fa -bs 8192 -count 3932258 # 8192*3932258 = 32213057536 Then I create a zeroed file for the bloom filter and another for the index section. After I format those files I run % venti/buildindex -b venti.conf 2012/0119 17:11:41 err 2: invalid ending address in arena table venti/buildindex: can't init venti: can't initialize venti: /home/hugo/tmpventi/fa: invalid ending address in arena table It seems that the backup I create is not correct, am I right? 2012/1/17 David du Colombier <0in...@gmail.com>: >> I've backed up all my *active* arenas in to another disk, just to be >> safe. The man page says that the index and the bloom filter may be >> rebuilt if lost. So it seems sufficient to backup my arenas, am I >> right? > > Yes, you can rebuild the index and the Bloom filter > with 'venti/buildindex -b'. > > -- > David du Colombier > -- Hugo
Re: [9fans] venti backup
Great. Thanks. I hope I will never need to use my backed up arenas :-) 2012/1/17 Steve Simon : >> So it seems sufficient to backup my arenas, am I >> right? > > Yes, exactly, I haev done this several times. > > It might take a few hours and some studying of manuals > but the arenas are all you need. > > -Steve > -- Hugo
[9fans] venti backup
Hello, I've backed up all my *active* arenas in to another disk, just to be safe. The man page says that the index and the bloom filter may be rebuilt if lost. So it seems sufficient to backup my arenas, am I right? saludos, -- Hugo
Re: [9fans] awk reading?
I agree with Ruda. 2011/12/19 Rudolf Sykora : > On 19 December 2011 11:27, dexen deVries wrote: >> just yesterday i've got a glimpse of awk's power and neatness. it's good, >> it's >> useful and i want to dig deeper. what's recommended online reading on awk? > > I believe one of the best pieces is the book by Aho, Kernighan and Weinberger. > Reads well, isn't too long. (as is usual for Kernighan) > > Ruda > -- Hugo
Re: [9fans] troff book
I think I'll reconsider using troff for my thesis, because some math is sure to come across. But learning more about troff is indeed useful. 2011/12/2 simon softnet : > By the way, I am currently forced to use LaTeX. > It's because formulas look nicer, and also because my current > supervisor asks me to. > > I was thinking of writing a program that accepts a file formated with > -ms or -me macros and translates it to LaTeX equivalent macros. This > way, I would hopefully have the best of both worlds: the elegance of > troff syntax and the neatness of TeX output. > Is anyone interested in helping me out? > > Simon. > > On Fri, Dec 2, 2011 at 11:24 PM, simon softnet wrote: >> I have written my bachelor's thesis (80 pages with graphs, tables, >> diagrams, equations, etc..) in pure troff -me. >> It went as smooth as I could ever hope for. >> LaTeX is much more difficult to use, IMO. >> >> Simon. >> >> On Fri, Dec 2, 2011 at 10:02 PM, wrote: >>> On Fri, Dec 02, 2011 at 10:45:24AM -0800, John Floren wrote: > There was even a bunch of connections last week because somebody was > looking for TeX on phones... (I don't know why, but the community marvel > named TeXlive didn't seem to be the first choice in this case...) > Ah, I think that was due to me... I read http://news.ycombinator.com/item?id=3264341 and suggested that they take a look at kerTeX :) >>> >>> Yes, you were one of the two (the other one has identified himself >>> now... ;)). [I suspected this from the initials of the author of the >>> mail.] >>> >>> And for others, BTW, if LaTeX sure works, it's because John was >>> brave enough to try and not to give up after initial errors. >>> >>> Thanks! >>> -- >>> Thierry Laronde >>> http://www.kergis.com/ >>> Key fingerprint = 0FF7 E906 FBAF FE95 FD89 250D 52B1 AE95 6006 F40C >>> > -- Hugo
Re: [9fans] troff book
Thanks for the feedback. I'll have a look at some of those books. 2011/12/2 Steve Simon : > By far the best books on troff (IMHO) are the pair by Gehani and Lally, > Document Formatting and Typesetting on the Unix system, volume 1 and 2. > > They are out of print but available from alibris.com and somtimes on > amazon new & used. > > -Steve > -- Hugo
[9fans] troff book
Hi, soon I'll begin to write my thesis and I am planing to use troff. I previously wrote some documents with it, mostly with the ms macro, which I think I'll use for the thesis. Can you advice some book about troff with some introduction on how to write troff macros? Saludos y gracias, -- Hugo
Re: [9fans] line numbers in troff
Thanks a lot. 2011/5/19 Charles Forsyth : > .nm 1 turns on line number mode > .nm 0 turns it off > .nn N turns it off for the next N lines > .nm 1 M numbers every M lines following > > there are other options > > -- Mensaje reenviado -- > From: hugo rivera > To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> > Date: Thu, 19 May 2011 15:09:23 +0200 > Subject: [9fans] line numbers in troff > Hello, > usually, when writting drafts for somebody else to review, its useful > to have line numbers printed at the beginning of each line. > How would you implement that in troff? I never written a macro in > troff, so some basic pointers would be enough for me (e.g. some good > troff book). > Thanks, > > -- > Hugo > -- Hugo
[9fans] line numbers in troff
Hello, usually, when writting drafts for somebody else to review, its useful to have line numbers printed at the beginning of each line. How would you implement that in troff? I never written a macro in troff, so some basic pointers would be enough for me (e.g. some good troff book). Thanks, -- Hugo
Re: [9fans] acme Local command on p9p
That doesn't work. I think it's because the environment variables that acme sees are those that already existed when it was called, and not those created afterwards. 2011/2/23 Gabriel Diaz : > hello > > probably there are a better ways, like rc maintainng a `namespace`/env fs, > so it reads that fs creating the environment correspondant to that namespace > when started or simmiliar, but in lunix way (and with other shells) you can > use one script to launch acme that executes the arguments of the Local > script after the acme launch :-? > start_acme.sh > #/bin/bash > acme & > while a=read(named_pipe_or_simmilar); do > $a > done; > > And Local > #!/bin/bash > echo $* > named_pipe_or_simmilar > So Local export var=var could make var available > Also not sure if plumber would help you instead of using pipes. > My corporate pc barely allows me to reply emails, so this is not tested ;) > gabi > > On Wed, Feb 23, 2011 at 11:39 AM, hugo rivera wrote: >> >> Hello, >> the man page for acme on p9p reads >> >> Local In the Plan 9 acme, this prefix causes a command to be run in >> acme'sown file name space and environment variable group. On >> Unix this is impossible... >> >> is there any other way to define environment variables for acme while >> it's running? >> On plan9, Local var=val sets var and then all other commands I execute >> with a middle click see $var. On some ocasions this is very useful. >> >> -- >> Hugo >> > > -- Hugo
[9fans] acme Local command on p9p
Hello, the man page for acme on p9p reads Local In the Plan 9 acme, this prefix causes a command to be run in acme'sown file name space and environment variable group. On Unix this is impossible... is there any other way to define environment variables for acme while it's running? On plan9, Local var=val sets var and then all other commands I execute with a middle click see $var. On some ocasions this is very useful. -- Hugo
Re: [9fans] rc file name matching
I am not restricted to rc only. I was doing something similar to you,
but then it occurred to me that perhaps there was an easy way to do it
with rc; apparently there isn't ☺
2011/2/16 Anthony Sorace :
> I hadn't thought of erik's answer. I usually end up doing something
> like "cat `{ls | grep -v hola}" or the like. I find that easier to read,
> unless you're really restricted to literally using just rc for some reason.
>
>
--
Hugo
Re: [9fans] rc file name matching
Thanks Erik. 2011/2/16 erik quanstrom : > On Wed Feb 16 09:59:31 EST 2011, uai...@gmail.com wrote: >> Hi, >> In rc >> *hola* >> matches any file that contains the word 'hola'. Is there any way to >> match all the files that don't contain 'hola' in its name? with awk >> and grep it's easy, but I can't figure out with rc. > > match=() > for(i in *) > ! ~ $i *hola && match = ($match $i) > > - erik > > -- Hugo
[9fans] rc file name matching
Hi, In rc *hola* matches any file that contains the word 'hola'. Is there any way to match all the files that don't contain 'hola' in its name? with awk and grep it's easy, but I can't figure out with rc. -- Hugo
Re: [9fans] ACME: can't open file
Hi, that should work with *existing* files. 2011/1/28 Nyan Htoo Tin : > > Hi, I'm newbie to plan 9, I followed a newbie-guideline for plan 9. > http://docs.google.com/viewer?a=v&q=cache:QmcfceZ7SaEJ:www.quanstro.net/newbie-guide.pdf+plan+9+newbie&hl=en&pid=bl&srcid=ADGEESgTqzYeNZOLhG2K94Rvow-B5QW7fca_kmbC2_aLHOYpZddUl27h_fpgZcy46k8CSKJ9CXoZVzGiEK0uCamT85OSZuUJjf3EuJe4DtkzATf3NhPMYS3PCVzt0nj4PQl7pIgfbOAM&sig=AHIEtbShZDoLJxZOeKbCGxgKuQx_B_yndA&pli=1 > section 3.2 > When I tried acme hello.c, there's an error saying: > can't open hello.c: 'hello.c' file does not exist > > I'm running plan 9 on virtual box. Host OS is fedora. > > Thanks & Best Regards, > Nyan > > -- Hugo
[9fans] slides and troff
Hello, I'm using Uriel's macros for creating slides with groff (I'm unable to make p9p's troff to work). The slides look fine, but I can't add slide numbers at the bottom of each slide (which I expected to get, since the slide macros seem to modify the ms macro). I've been messing around with troff code, trying to get the slide numbering, but no results so far (I can't get the footer example from Osanna's user manual to work, given my inexperience with troff coding). Any help is appreciated. -- Hugo
Re: [9fans] proceedings
Thanks. 2010/10/13 Jeff Sickel : > http://www.iwp9.org/iwp95e.pdf > > should work for you ... > > On Oct 13, 2010, at 10:26 AM, hugo rivera wrote: > >> http://9fans.net/iwp95e.pdf: >> The requested URL /iwp95e.pdf was not found on this server. >> >> 2010/10/13 erik quanstrom : >>> raw proceedings posted www.9fans.net/iwp95e.pdf >>> >>> >> >> >> >> -- >> Hugo >> >> > > > -- Hugo
Re: [9fans] proceedings
http://9fans.net/iwp95e.pdf: The requested URL /iwp95e.pdf was not found on this server. 2010/10/13 erik quanstrom : > raw proceedings posted www.9fans.net/iwp95e.pdf > > -- Hugo
[9fans] print conversions
Hi,
I'm trying to print floating point numbers, but I get one extra digit
when I use the g verb. Quoting from print(2),
"... and precision is the maximum number of significant digits for g
and G conversions."; so I expect
print("%.2g\n", 1234.567);
to produce
1.2e+03
but I get
1.23e+03
it seems that print(2) uses printf rules for setting the number of
decimals, which will produce the number of significant digits plus
one. I guess that the man page or the implementation needs to be
corrected, but I could be wrong.
Saludos
--
Hugo
Re: [9fans] regexp doubt
Thanks to you, guys. 2010/7/14 Russ Cox : > thanks for tracking this down. > fixed in p9p, with some extra names. > sam needs the same changes. > libregexp is okay. > > http://code.swtch.com/plan9port/changeset/239be7f74189 > > russ > > -- Hugo
Re: [9fans] regexp doubt
Yes, I'm using acme from p9p. 2010/7/13 : >> I think you have found a real bug. >> >> I created a new window containing >> >> x x+ x- xy >> >> and I executed Edit ,x/x[ +\-]/d >> and sure enough it doesn't delete x-. > > Interesting. Is that in p9p acme? I just tried it in 9vx > and it did delete everything except the xy. > > BLS > > > -- Hugo
Re: [9fans] regexp doubt
maybe I'm using a buggy version of acme, because /stat[abc]?[- ;]/ also fails with a "malformed" error. And according to the regexp(7) man page, you should be able to precede a '-' with a backslash. 2010/7/13 : >> both of them yield a >> >> regexp: malformed `[]' >> >> error. >> I forgot to mention and I had an alternative solution from the >> beginning /stat[abc]?([ ;]|-)/ >> I'm just wondering the reason the original version failed. > > As I recall, if you're going to include a hyphen in a character > class, it has to be the first character so that it isn't taken to > indicate a range. > > BLS > > > -- Hugo
Re: [9fans] regexp doubt
both of them yield a regexp: malformed `[]' error. I forgot to mention and I had an alternative solution from the beginning /stat[abc]?([ ;]|-)/ I'm just wondering the reason the original version failed. 2010/7/13 Rodolfo (kix) : > Can you try: > > /stat[abc]?[ ;\\-]/ > > I am not sure (and I do not have acme here), but probably the problem > is with the backslash. > > You can try this too: > > /stat[abc]?[ ;-]/ > -- Hugo
Re: [9fans] regexp doubt
I wasn't searching, but using it with acme's x command. 2010/7/13 erik quanstrom : > On Tue Jul 13 11:13:03 EDT 2010, uai...@gmail.com wrote: >> Hi, >> can someone tell me why the regular expression /stat[abc]?[ ;\-]/ >> doesn't match the string "stat-" in acme? I expect it to match, where >> does my mistake lie? >> Saludos, > > if you are doing a b3 search, you want > > :/stat[abc]?[ ;\-]/ > > just the leading : is missing. > > - erik > > -- Hugo
Re: [9fans] regexp doubt
2010/7/13 Vinu Rajashekhar : > > On Tue, Jul 13, 2010 at 8:26 PM, hugo rivera wrote: > It's the [abc]? I guess, it says that you want an a, b, or c after stat. not really, since there's a '?' REP operator there. And it actually matches strings like "stat;" -- Hugo
[9fans] regexp doubt
Hi, can someone tell me why the regular expression /stat[abc]?[ ;\-]/ doesn't match the string "stat-" in acme? I expect it to match, where does my mistake lie? Saludos, -- Hugo
Re: [9fans] xml
Now that I had a closer look to xml files, I think I get the main idea. >From my point of view, xml doesn't seem so bad after all (please, please, this is just an uninformed opinion) but perhaps in the future I'll be able to see its defects. -- Hugo
[9fans] xml
If you haven't heard of XML yet, you must be living under a rock! - Programming in the .NET Environment Taken from the fortunes file. I guess I must be living under a rock, but I don't know what xml is, or pragmatically, what is it for. Please, understand that I'm not trying to start a flame war in here, but I'd really appreciate if someone could explain xml to me. I've read the wikipedia entry but doesn't help me a lot, and for the first time in my life I saw some xml code today, in a program that I need to use and, hopefully, understand. I know this subject isn't plan 9 related, but 9fans is my best resource for CS questions. -- Hugo
Re: [9fans] portability question
Thanks for the feedback.
2010/6/16 Bakul Shah :
> On Wed, 16 Jun 2010 11:11:09 +0200 hugo rivera wrote:
>> Can someone clarify why the program included outputs 'AB00' (as I
>> expect) on 32 bit systems and 'AB00' on 64 bit systems?
>> where all those 1's came from? what's the portable way of doing this?
>> sorry for newbie questions like this.
>>
>>
>> unsigned long l;
>> unsigned char c;
>>
>> l = 0L;
>> c = 0xAB;
>> l |= c << 24;
>> printf("%lX\n", l);
>
> For use of C on non-plan9 machines I would recommend
> downloading the last draft of the C9x standard as a ready
> reference. Google for n843.
>
> As per Section 6.5.7 of C9x, both operands of << must be of
> "integer type" and the result type is that of the left
> operand. Since sizeof c < sizeof(int), it is promoted. Now
> 6.3.1.2 says "if an int can represent all values of the
> original type, the value is converted to an int". So c is
> first converted to an int which means c << 24 is an integer
> and -ve. Since an int is smaller than a long (in your case)
> it is promoted to a long. Changing the |= statement to
>
> l |= (unsigned)c << 24;
>
> should give you what you want.
>
>
--
Hugo
Re: [9fans] portability question
2010/6/16 Lucio De Re :
> On Wed, Jun 16, 2010 at 11:11:09AM +0200, hugo rivera wrote:
>
>> printf("%lX\n", l);
>
> Would you try %luX? It may work better?
no, or at least not as I intend. It produces '2868903936X' on 32 bit
linux and '18446744072283488256X' on 64 bit. According to printf(3),
an 'l' should work with both unsigned and signed long quantities.
--
Hugo
[9fans] portability question
Can someone clarify why the program included outputs 'AB00' (as I
expect) on 32 bit systems and 'AB00' on 64 bit systems?
where all those 1's came from? what's the portable way of doing this?
sorry for newbie questions like this.
unsigned long l;
unsigned char c;
l = 0L;
c = 0xAB;
l |= c << 24;
printf("%lX\n", l);
--
Hugo
Re: [9fans] testing...
I got it. 2010/5/6 EBo (sandien) : > My ISP is migrating email clients and this is apparently breaking my > subscriptions... Just a test to see if I can get through... > > EBo -- > > > > -- Hugo
Re: [9fans] MPI
2010/3/31 EBo : > Other than that, you might want to download some of the models which use MPI > and possibly play with them. Depending on the size of the codebase this might > scare you off a bit, but I actually find playing with the GCM WRF and RegCM3 > rather enlightening once I got past the initial frustrations... On second > thought I never got over my frustrations, but this brings me to a pet peve -- > if you are looking into modeling and are not a computer scientist by training, > PLEASE, PLEASE, PLEASE at LEAST sit in a course on algorithms and data > structures, and possibly another one in software engineering. For all the > theoretical physicists, ecologists, biologists, sociologists, and economists I > have worked with, I have yet to meet one which have had more than a practicum > in FORTRAN and/or C/C++. If you already have a CS background, you come to > understand why some of the code still makes me twitch... I must admit that, in general, physicist, astrophysicists and astronomers are very bad programmers. I've worked with all those breeds and we really suck. Maybe the fact that I've read, and solved almost all the exercises from "the practice of programming" and K&R's "the c programming language" will make you feel better. Currently I'm going through Aho et al. "the awk programming language", and then I'm planning to move to "The Unix Programming Environment". Coming back to the subject, I'll start with your recommendations and Andrew's. Probably this is just a newbie talking, but it seemed to me a kind of problem easily solved with file servers and 9p; but again, this was only my first impression. Thanks to all for the feedback. -- Hugo
[9fans] MPI
Hi, I'm about to start a course that goes by the title of "Computational Physics", and as I was having a look at the items that we are going to cover, and saw that there's an "Introduction to parallel computing and parallel programming with Message Passing Interface (MPI)". Some of you 9fans may be familiar with this protocol, any comments on it? can you recommend a book on this topic (not MPI, but concurrent stuff in general)? how plan9 solves this problem, if at all? Any feedback is welcome ☺ If you consider this message as noise, please, disregard it. Saludos, -- Hugo
Re: [9fans] Plan ? (was: native install)
I don't agree. I think that more than one person can be involved in any given project. 2010/3/30 Gabriel Diaz Lopez de la Llave : > hello > > This way (dot-it-your-self-way) we will "only" have one-man projects. . . > > slds. > > gabi > -- Hugo
Re: [9fans] Plan ? (was: native install)
I agree with Steve. I like the community approach to this matter: if plan9 doesn't have what you need, do it yourself; if you do something that might be useful for others share it and see what happens. Being a newbie myself I find very hard to write my own utilities, but that's a good way to learn ;-) 2010/3/30 Steve Simon : >> No one's willing to spearhead a "General Purpose 9" experiment, and no >> one's interested in collaborating on and contributing to such a project? >> >> "If you want [general purpose], you know where to get it." seems to >> be the period that ends all such discussion. > > I wouldn't quite agree, the discussions usually end one of three ways: > > - somone wants somthing like gnome, and are encouraged to run linux. > > - somone wants "the community" to port smthing like gnome and noone is > interested so they get bored and go away. > > - somone wants to write some code to solve a problem they have with plan9 > and the just get on with it and tell the list when its done. > > An example: > > I need SVN support at work, cinap has wrapped up his linuxemu with the snv > client and the apropriate shared libraries (thanks cinap). This allows me to > continue using plan9 (as I do every day, all day). > > In parallel I now have written a webdav client which I hope will become > a DeltaV/SVN client for plan9. I feel its worth writing as I think it is > interesting to try and fit the plan9 file model to SVN's version control > model. > > I wanted it, I got on with it and wrote it. > >> I can't help but wonder: where's the crux of the inertia? > > An interesting question. If you can garner enthusism from the list > perhaps you can be "the one" to spearhead a new burst of enthusism? > > -Steve > > -- Hugo
Re: [9fans] float overflow
Uf, I didn't have any idea of the risks implied. Thanks for correcting me ;-) 2010/3/26 ron minnich : > http://en.wikipedia.org/wiki/Fail-fast > > says it better than I can. > > ron > > -- Hugo
Re: [9fans] float overflow
2010/3/26 ron minnich : > yes, so I wonder, under what circumstances would you want this > non-useful output? Are you going to do further computation with the > number that you can not represent? I almost prefer the Plan 9 behavior > in this case ... Well, I was expecting this question :-) But I don't actually have a good answer. It just felt wrong to let the program crash. -- Hugo
Re: [9fans] float overflow
great! now I can throw all the garbage I want to my program :-) Thanks a lot. 2010/3/26 Federico G. Benavento : > garbage in, garbage out > > lotte% echo 1.75e308+1.75e308 | hoc > hoc 730809: suicide: sys: fp: numeric overflow fppc=0x3004 > status=0xb988 pc=0x3a75 > lotte% > > if you want to keep feeding garbage to your program disable the exceptions > > see getfcr(2) > > or http://plan9.bell-labs.com/magic/man2html/2/getfcr > > setfcr(getfcr()&~(FPINVAL)); > > feel free to turn division by 0 trap too > -- Hugo
[9fans] float overflow
Hello, float operations are causing me some headaches on plan 9 (9vx). I have a program that crashes badly when I feed it with near-the-top doubles ~1.1e308. This causes an overflow in a function that needs to square this values and acid points the line where the first call to pow(2) occurs when I debug it. The problem is that this doesn't happen at all when the program is compiled with gcc (9c) on linux. Obviously my results aren't useful, but I get '+Inf' on my output and the program doesn't crash. I thought of using isInf(2) to avoid Infs in my operations, but this would make the code really ugly and probably slow. I've seen that hoc also suffers from this. On 9vx % echo 1.75e308+1.75e308 | hoc hoc 851: suicide: sys: trap: 19 (reserved) pc=0x3a75 but on linux echo 1.75e308+1.75e308 | hoc +Inf is there something I can do to remedy this situation? maybe this doesn't happen on a native plan 9 installation, but I don't have access to any. Saludos, -- Hugo
Re: [9fans] quote o' the day
2010/3/25 Francisco J Ballesteros : > In fact, we have both printed on paper hanging from the wall of the corridor > near our office. Let's hope they learn. This is a great idea. I think I'll copy it :-) -- Hugo
Re: [9fans] using acme/Mail from plan9port in Linux
Thanks a lot!
2010/3/23 Russ Cox :
>> I have no idea if this is related but in the early days with gmail it would
>> automaticially remove messages when they where downloaded so they disappeared
>> as fast as you tried to read them.
>>
>> Perhaps your imap server is doing somthing similar?
>
> That was with POP3, not with IMAP.
>
> As to the original question, when I run acme Mail on
> plan9port I don't bother to set up the upas mail queues,
> which frankly I don't trust on top of a Unix file system.
> Instead you can create a $HOME/bin/pipefrom that
> sends the mail via the system mailer, maybe even
> on another machine.
>
> This is my current version, which is a bit more complex
> than it needs to be, but you get the idea. You could
> drop the ssh if you trust your local mail installation
> to be configured properly.
>
> Russ
>
> #!/usr/local/plan9/bin/rc
>
> host=swtch.com # where to relay via ssh
>
> if(! ~ $#upasname 1)
> upasname=rsc+boun...@swtch.com
>
> echo $* >>/home/rsc/pipefrom.log
> . /usr/local/plan9/bin/9.rc
>
> if(~ $1 -x){
> shift
> echo $*
> exit 0
> }
> if(~ $1 -*){
> echo 'cannot deal with options' >[1=2]
> exit 1
> }
>
> ipaddr=`{/sbin/ifconfig | sed -n 's/.*inet addr:([^ ]*) .*/\1/p'}
> if(~ $#ipaddr 0){
> echo not online >[1=2]
> exit offline
> }
>
> exec ssh $host sendmail -f $upasname $* rsc+out...@swtch.com
>
>
--
Hugo
Re: [9fans] using acme/Mail from plan9port in Linux
Great! now it works. Thank you very much; you answered in the exact moment, otherwise frustration would have been too great :-) One last thing (I hope): when I'm reading the mail on my imap server with nedmail, and I want to save a message, I get : 3 w /tmp/3 !message disappeared and nothing gets written. Do you have any idea what's causing this? and even better, how to solve it :-) 2010/3/23 Mathieu Lonjaret : > Hello, > > if you haven't done so yet, you need to edit the > $PLAN9/mail/lib/rewrite file like that: > > # send all mail to the gateway or mail server, $smtp, for delivery > ([^!]*)!(.*) | "$PLAN9/mail/lib/qmail '\s' 'xxx.xxx.xxx.xxx'" > "'\...@\1'" > > where xxx.xxx.xxx.xxx is the ip address of your smtp. I think once I > had some resolution problem, that's why I set it by ip here instead of > by name. Works fine enough so I never bothered to do it by name > afterwards. > > hth, > Mathieu > > > -- Mensaje reenviado -- > From: hugo rivera > To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> > Date: Tue, 23 Mar 2010 12:18:56 +0100 > Subject: Re: [9fans] using acme/Mail from plan9port in Linux > I configured mailfs so now I can read email, thanks. > But writing mail is not going so well: > > $ cat $PLAN9/log/smtp.fail > myhost Mar 23 11:21:44 bad network /net/net!my.smtp.server!smtp > (my.smtp.server) > myhost Mar 23 11:28:06 bad network /net/net!my.smtp.server!smtp > (my.smtp.server) > myhost Mar 23 11:34:20 bad network /net/net!my.smtp.server!smtp > (my.smtp.server) > > after using marshal to send messages. The file > $PLAN9/mail/queue/hugo/E.XX contains a very similar error > > smtp: bad network /net/net!my.smtp.server!smtp (my.smtp.server) > > I've been playing around with files inside $PLAN9/mail/lib but no > success so far. Any tips are welcome! :-) > > 2009/11/21 Mathieu Lonjaret : >> On Sat, Nov 21, 2009 at 10:33 PM, Lorenzo Bolla wrote: >>> Hi all, >>> can anyone point me to a document (if any) that explains how to use >>> acme/Mail to read e-mail in Linux? >>> I couldn't find any useful information in the plan9port distribution and it >>> does not work "out-of-the-box". >>> Thanks for your help! >>> L. >> >> 1) build and install mailfs >> cd $PLAN9/src/cmd/upas/ >> mk install >> cd nfs >> mk install >> >> 2) configuration >> cd $PLAN9/log; chmod 666 smtp smtp.debug smtp.fail mail >smtp >>>smtp.debug >smtp.fail >mail >> cd $PLAN9/mail/lib >> edit rewrite >> optionnally edit remotemail >> >> 3) authentication >> factotum >> factotum -g 'proto=pass service=imap server=your.imap.server >> user=you_there !password?' >> >> 4) run it! >> mailfs -t your.imap.server (-t is for tls) >> button 2 exec on 'Mail' in acme (without the quotes) >> (you need the plumber running for everything to work as expected in acme) >> >> hth, >> Mathieu >> >> > > > > -- > Hugo > > -- Hugo
Re: [9fans] using acme/Mail from plan9port in Linux
I configured mailfs so now I can read email, thanks. But writing mail is not going so well: $ cat $PLAN9/log/smtp.fail myhost Mar 23 11:21:44 bad network /net/net!my.smtp.server!smtp (my.smtp.server) myhost Mar 23 11:28:06 bad network /net/net!my.smtp.server!smtp (my.smtp.server) myhost Mar 23 11:34:20 bad network /net/net!my.smtp.server!smtp (my.smtp.server) after using marshal to send messages. The file $PLAN9/mail/queue/hugo/E.XX contains a very similar error smtp: bad network /net/net!my.smtp.server!smtp (my.smtp.server) I've been playing around with files inside $PLAN9/mail/lib but no success so far. Any tips are welcome! :-) 2009/11/21 Mathieu Lonjaret : > On Sat, Nov 21, 2009 at 10:33 PM, Lorenzo Bolla wrote: >> Hi all, >> can anyone point me to a document (if any) that explains how to use >> acme/Mail to read e-mail in Linux? >> I couldn't find any useful information in the plan9port distribution and it >> does not work "out-of-the-box". >> Thanks for your help! >> L. > > 1) build and install mailfs > cd $PLAN9/src/cmd/upas/ > mk install > cd nfs > mk install > > 2) configuration > cd $PLAN9/log; chmod 666 smtp smtp.debug smtp.fail mail >smtp >>smtp.debug >smtp.fail >mail > cd $PLAN9/mail/lib > edit rewrite > optionnally edit remotemail > > 3) authentication > factotum > factotum -g 'proto=pass service=imap server=your.imap.server > user=you_there !password?' > > 4) run it! > mailfs -t your.imap.server (-t is for tls) > button 2 exec on 'Mail' in acme (without the quotes) > (you need the plumber running for everything to work as expected in acme) > > hth, > Mathieu > > -- Hugo
Re: [9fans] 9vx and email
yes, I meant 9vx. So I'll try to do it with p9p's mailfs. Thanks. 2010/3/18 Russ Cox : > your subject says 9vx and email, but your message > didn't mention 9vx. assuming you are actually using > 9vx, it's important to note that the mail system depends > heavily on lock files, and the #Z file system in 9vx, > which is what gives you access to the host file system, > does not support lock files. you'll only get the right > behavior if you're using a native plan 9 file system like > fossil or kfs or a network connection to one of those > to hold the /mail/queue directory tree. > > russ > > -- Hugo
[9fans] 9vx and email
Hello, I've been searching through the man pages and 9fans archive and I am unable to figure out how to correctly setup plan9 to read and write mail. I've added my mail servers in different places (i.e. /rc/bin/termrc, /lib/ndb/local, /mail/lib/rewrite.gateway), ran factotum, ran upas/fs but I'm unable to read or write mail. Can anyone point me in the right direction? saludos, -- Hugo
Re: [9fans] plan9 on qemu and 9vx
It seems that 9vx has become a lot more stable than before. The last time I used it to write anything in C was like 8 months ago, and the instability issues I had in mind are dated from back then. So I'll give it another try and perhaps it will become my main plan 9 platform. 2010/3/13 ron minnich : > I build 9vx from source and routinely have it running for days, until > I need an ubongo reboot in fact. Don't know how to figure out what's > different but I do know that gcc/glibc/distros in linux universe are > so variable, literally week to week, that the build environment is > very unstable. That might be an issue with any prebuilt version, or a > version you build yourself -- you really can't win. > > ron > > -- Hugo
Re: [9fans] plan9 on qemu and 9vx
2010/3/13, Tim Newsham : > Are you running the latest from sources, or are you using > the prebuilt binary? There are important stability fixes > in the sources that aren't in the binary (unless its been updated > recently). > Prebuilt binary, downloaded on Feb/22/2010. -- Hugo
Re: [9fans] plan9 on qemu and 9vx
9vx crashes on me quite often, and qemu doesn't. That's the only reason I use qemu, otherwise I'd also be stuck with 9vx too :-) 2010/3/12 ron minnich : > Unless there's some compelling reason to use qemu (I can't think of > one) why not just use 9vx exclusively? I've made a transition over the > years: > qemu > xen > kvm > lguest > 9vx > > And am stuck at 9vx ... > > ron > > -- Hugo
[9fans] plan9 on qemu and 9vx
Hello, I have a Slackware installation running on my box. On top of it, I often use qemu to run plan9, but it's inconvenient to constantly keep track of the things I do there, like C programs, because many of them are also useful under Slackware (then I compile them under linux with p9p's 9c). So the approach I've taken is to run 9vx and invoke % aux/listen1 -tv tcp!192.168.1.2!12345 /bin/exportfs from there. Then, from plan9 inside qemu, I run % import -A tcp!192.168.1.1!12345 /usr/hugo /n/temp and then bind anything I want inside /n/temp to my namespace in plan9. That way I don't need to keep track of anything I do inside qemu. But the next step I want to take is to run just a terminal with qemu, probably using the plan9 iso image, and have 9vx as my fileserver. Do you know if this is even possible? I'm not sure it is since 9vx is not actually plan9. Can you offer me some hints on how to do it? Saludos a todos, -- Hugo
Re: [9fans] rc strings
Yes, works just as I needed.
Thanks.
2010/3/11 roger peppe :
> what about this?
> ifs='
> ' n=`{echo 'a b'}
>
> or
>
> ifs='' n=`{echo 'a b'}
>
> if you don't mind the newline character being in the string.
>
--
Hugo
Re: [9fans] rc strings
> cant you just use $"n ?
No, because the number of spaces in between is important. But I found a solution
% ifs='
' n=`{echo 'a b'}
works fine. Sorry for the noise.
--
Hugo
[9fans] rc strings
Hi,
% n=`{echo 'a b'}
sets n to a list containing two elements, 'a' and 'b'. How can I set n
to a single string 'a b'? note that I must execute external
commands, so the obvious solution
% n='a b'
doesn't work for me.
Saludos,
--
Hugo
Re: [9fans] Check out my photos on Facebook
2010/3/3 : > Is it just me, or do others also find that having to subscribe to > facebook to access its database is poor netiquette? > > And asking an entire mailing list membership to join so as to see some > pictures even more so? I doubt he did it on purpose. -- Hugo
Re: [9fans] venti problem
Thanks for the links, now everything is working (apparently), but I have no idea what was the source of my error(s). 2010/1/29 maht : > Hi Hugo, > > I did this only yesterday and am working on a backup script to go from SMB > share on Debian -> cifs on plan9 running in Qemu on XP -> venti running on > Debian (the process works, just I haven't made a script yet). > > http://maht0x0r.blogspot.com/2010/01/venti-on-linux-via-p9p.html > > and when I'd finished mycrotiv told me he already had a script for it > > http://sphericalharmony.com/plan9/makeventi > > -- Hugo
[9fans] venti problem
Hi, I am trying to set up a venti server but I can't. I am using p9p on linux, downloaded around January 21. I followed all the steps described on venti(8), a number of times starting from scratch, but I always get vtversion /dev/fd/8: vtversion: bad format in version string vtversion /dev/fd/7: vtversion: bad format in version string vtversion /dev/fd/8: vtversion: bad format in version string vtversion /dev/fd/8: vtversion: bad format in version string vtversion /dev/fd/7: vtversion: bad format in version string vtversion /dev/fd/7: vtversion: bad format in version string vtversion /dev/fd/7: vtversion: bad format in version string vtversion /dev/fd/7: vtversion: bad format in version string vtversion /dev/fd/7: vtversion: bad format in version string vtversion /dev/fd/7: vtversion: bad format in version string while querying the venti web server. Before this, >: venti/fmtbloom /my/partition warning: size not a power of 2; only using 128MB fmtbloom: using 128MB, 32 hashes/score, best up to 23,860,929 blocks is the only step that produces a warning. Maybe I'm doing something wrong somewhere, but I obviously don't realize. Last time I had to set up a venti server (~1 year) things went OK, and I am doing more or less the same as I did back then, as far as I remember. Here's my venti.conf index main isect /dev/ventihd3 arenas /dev/ventihd2 bloom /dev/ventihd4 mem 43M bcmem 85M icmem 128M and my partitions are Name Flags Part TypeFS Type [Label] Size (MB) ventihd2 Primary Plan 9 237990.26 ventihd3 Primary Plan 9 11901.99 ventihd4 Primary Plan 9 131.61 according to cfdisk. Saludos, -- Hugo
Re: [9fans] Q: awk omit cols
I think
awk '{$1="";print}'
should do what you want, provided that you don't care about leading spaces.
2009/11/19 Peter A. Cejchan :
> On Thu, Nov 19, 2009 at 9:52 AM, Russ Cox wrote:
>> awk '{print substr($0, 1+length($1)+1)}'
>>
>
> Big thank you, Russ, however, wouldn't it be smarter if we had some
> kind of 'not' operator here...? Sometimes, especially when you write
> the script by hand it is easier to delete few fields than to
> explicitly write out all those remaining... IMHO...
>
> ++pac
>
>
--
Hugo
Re: [9fans] acme bug?
> is the /sw/somedir directory in the namespace of acme? yes. -- Hugo
Re: [9fans] acme bug?
I am not sure where this came from:
% whatis cd
fn cd {if(builtin cd $1){if(flag i)$PLAN9^/bin/9 awd || status='';status=''}}
but I don't think awd(1) has something to do with the problem.
I think is something else, and maybe I was wrong and doesn't even has
anything to do with acme. I have no clue on what's going on:
1.- Start with acme showing all files in a directory (~3000). They all
happen to be png images. They are all correctly shown in acme's
window.
2.- Write
for(i in *){ name=`{echo $i | 9 sed 's/png/jpg/'}; convert $i $name}
somewhere in your tag and then execute it using your mouse button 2.
(That's imagemagick's convert utility)
3.- Write
rm *.png
and execute it using your mouse button 2.
4.- Execute a Get in your window. Now all files are gone (according to acme).
5.- Write 9 ls in your tag and execute it. You get all your jpg files.
6.- I am puzzled.
2009/11/16, Mathieu Lonjaret :
> See awd(1)
>
>
> -- Mensaje reenviado --
> From: hugo rivera
> To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
> Date: Mon, 16 Nov 2009 15:03:57 +0100
> Subject: [9fans] acme bug?
> % cd /sw/somedir
> % 9 ls | 9 wc -l
> 2712
> % pwd
> /sw/somedir
> right click on /sw/somedir, and acme's window is empty. What's going on?
>
> --
> Hugo
>
>
--
Hugo
[9fans] acme bug?
% cd /sw/somedir % 9 ls | 9 wc -l 2712 % pwd /sw/somedir right click on /sw/somedir, and acme's window is empty. What's going on? -- Hugo
Re: [9fans] dup(3)
Thanks for your feedback. -- Hugo
[9fans] dup(3)
I am having a hard time understanding the dircp script and the dup(3)
device. What's exactly the purpose of writing
@{builtin cd $1 && tar cf /fd/1 .} | @{builtin cd $2 && tar xTf /fd/0}
instead of
{builtin cd $1 && tar c .} | {builtin cd $2 && tar xT}
I also had a look to the pdf2ps script, and there, it seems to be
useful given that you must provide a file trough the option
arguments. But for me this looks like a very narrow application for
the device. What other uses dup(3) might have?
Saludos
--
Hugo
Re: [9fans] handling output
shame on me, I didn't know about it.
2009/10/1, matt :
> Tee part of the POSIX standard
>
> http://www.opengroup.org/onlinepubs/9699919799/utilities/tee.html
>
>
>
> hugo rivera wrote:
>
>
> > Great, thanks.
> > Looks like plan 9 guys have thought about everything useful ☺ (and
> > that I didn't do my homework).
> >
> > 2009/10/1, roger peppe :
> >
> >
> > > 2009/10/1 hugo rivera :
> > >
> > >
> > >
> > > > I've been wondering for a while if there's some way to multiplex (if
> > > >
> > > >
> > > > this is the correct term) stdout for a given program:
> > >
> > >
> > > that's what tee does.
> > >
> > > e.g.
> > > ls | tee >{grep regexp1 > file1} >{grep regexp2 > file2}
> > >
> > >
> > >
> > >
> >
> >
> >
> >
>
>
>
--
Hugo
Re: [9fans] handling output
Great, thanks.
Looks like plan 9 guys have thought about everything useful ☺ (and
that I didn't do my homework).
2009/10/1, roger peppe :
> 2009/10/1 hugo rivera :
>
> > I've been wondering for a while if there's some way to multiplex (if
> > this is the correct term) stdout for a given program:
>
>
> that's what tee does.
>
> e.g.
> ls | tee >{grep regexp1 > file1} >{grep regexp2 > file2}
>
>
--
Hugo
[9fans] handling output
I've been wondering for a while if there's some way to multiplex (if
this is the correct term) stdout for a given program:
% ls @ {grep regexp1 > file1 } @ {grep regexp2 > file2}
where @ is an operator that would copy ls stdout to two (maybe more)
different file descriptors. Probably some syntax is required
(something like @[1=3]).
I think a c program can be written to accomplish this, but I'd like to
hear your opinion about it. Am I on the right path or just talking
rubbish?
Saludos
--
Hugo
Re: [9fans] sed oddity
Sadly things like sed are out of my reach; I have no idea how to program languages. Thanks for the reply. 2009/8/18, erik quanstrom : > > is there some reason why sed doesn't check for write errors on its > > stdout? (or at least it doesn't report them) > > > /n/sources/patch/sederrors > > while i agree that sed seems more complicated that i would > like when debugging, eating errors seems like the wrong thing > to do. it seems easy enough >[2]/dev/null if the old behavior > is wanted. > > the problem was that B* functions (Bopen, Bputc, Bputrune, Bterm) > were not consistently being checked for errors. > > i wonder if it would make sense to add a ->error() member > to Biobufhdr. since most programs just want to quit if they > have a bio error, they could just quit there without needing > lots tedious error checking. > > perhaps ->error could just be a boolean. > > > - erik > > -- Hugo
[9fans] sed oddity
Hi, is there some reason why sed doesn't check for write errors on its stdout? (or at least it doesn't report them) I am implementing a fs, and I wasted my whole afternoon trying to figure out why sed 300q file > mnt/data doesn't say anything about the write error I was expecting. Note that sed 300q file | cat > mnt/data shows my error message ;-) Am I missing something? Saludos -- Hugo
Re: [9fans] make slides in plan 9
I have no idea about tex on plan 9, but I've always used beamer on linux, maybe it's included on plan 9. 2009/8/17, xiangyu : > Hi, everyone: > How to make slides in plan 9 ? I always use ConTeXt in linux, but > it doesn't contained in the TeX distrbutions that plan 9 provides. > so how to make slides in plan 9 ? I'm looking forward for the > answer..thanks first !! > > -- Hugo
Re: [9fans] Inserting Special Characters into Acme
I'd have another window holding the special characters, and just copy-paste them in the lines you want to (mouse chords are the key for doing this quickly). Obviously this makes sense only if you have to insert few special characters per file, and not to many files. But if you want to add them at the end of each line I think that ,s/$/SP/g should work. Replace SP for any string of characters you need. 2009/8/17, Aaron W. Hsu : > Is there some way to insert special characters into Acme text windows? > Specifically, I want to do some file editing and put CRLF line endings into > some files, or around specific lines. Is there a way to do this regularly, > just typing, I'd also like to know a bulk or Edit command to do it, also. > > Aaron W. Hsu > > > -- > Of all tyrannies, a tyranny sincerely exercised for the good of its victims > may be the most oppressive. -- C. S. Lewis > > -- Hugo
Re: [9fans] 9p fids and references
OK, thanks. 2009/7/30, roger peppe : > 2009/7/30 hugo rivera : > > [...] there's no way two different files point to the > > > same data structure (but maybe two different fids do?) so reference > > counting is unnecessary, am I right? > > > no, because a file can be opened several times. > when you open a file you get a new fid. > > so if you've got resources associated with the file, > as opposed to resources private to the fid, > you have to reference count them (or poison any > fids that point to the file, if you *really* want the > resource to go away) > > -- Hugo
[9fans] 9p fids and references
Hi, I am trying to implement a toy fs using the 9p protocol. I've been reading Francisco's intro to plan 9 and section 5 of the manual pages, and I have to say I am surprised because I am actually learning from them; plan 9 man pages are really readable :-) (not to mention Francisco's fine intro). Anyway, there's one thing unclear for me and it's about fids and references: when a client opens a connection to my server, it chooses fids for all the files I have inside and also navigates the fs and performs operations using these fids (which are somehow mapped to qids in my server, but this isn't cristal clear for me; tough I know qids are unique and fids not necessarily so). The Fid structure contains an aux pointer to whatever I want and I am using it, but my problems start when I want to get rid of the data pointed by aux. In my fs, it's guaranteed that each file points to its unique data structure (pointed by aux) and there's no way two different files point to the same data structure (but maybe two different fids do?) so reference counting is unnecessary, am I right? I believe that clone shouldn't be a problem since I am creating copies of the structure instead of passing just a reference. I am trying to avoid dangling pointers when a file is removed without using reference counting, is it possible? Saludos -- Hugo
[9fans] data analysis on plan9
Hi, since I discovered plan 9, about two years ago, I've been constantly amazed by its simple yet quite powerful design. >From one year now, I am looking forward to move to plan 9 as my main OS, but I am not able to do so because it lacks the data analysis tools available in some other systems, like linux. Because my work involves dealing with data coming from experiments in astro-particle physics, I am more or less tied to data analysis software like the R programming language, Python's Numpy, Cern's ROOT and even gnuplot. While using them, I realized that most of the time I deal with text files that go here and there as input or output of small specific programs that perform a given task (I don't know if this is the result of my Unix/Plan 9 background or just a coincidence). Say I have a command 'clean' that removes undesired points from a body of data, and another command 'four' that performs the FFT; so they are used together as clean data.txt | four > results.txt so it occurred to me that one can create single commands to interact among them to perform some analysis on data, just like in the original Unix style. Awk can be used as glue among them, with some other small glue utilities. Plotting data is another thing that I would like to integrate into this, since plots are quite frequent while analysing data, but I am not sure how. Also, something similar to GSL (http://www.gnu.org/software/gsl/) would be invaluable or maybe even indispensable. Maybe some day I'll start to write some commands for plan 9 to begin working on it, but I want to convince myself that this is worth the time spent. What do you think of this? my main concern is that perhaps the "do one thing well" design falls short for data analysis. I've never seen people work like this on data analysis before (but I do not think I am the first to do it) because in general, they tend to use large data analysis frameworks. I'd really appreciate some feedback on this from people working on data analysis and also from the plan 9 community (otherwise I wouldn't be writing here :-) Saludos -- Hugo
Re: [9fans] Joining multicolumn files
Thanks Russ.
I have tryed it yet, but now I know where to start from.
2009/7/2, Russ Cox :
> #!/bin/rc
> awk 'BEGIN{
> for(;;){
> $0="";
> ok=getline x=$0;
> if(!(getline break;
> print x " " $0
> }
> }' $1 $2
>
>
> Russ
>
>
--
Hugo
[9fans] Joining multicolumn files
Hi, I've always joined multiple column files in plan 9 using pr(1). Say you have file A: columnA1 columnA2 columnA3 and file B: columnB1 columnB2 columnB3 so, using pr(1), I get another file C: columnA1 columnA2 columnA3 columnB1 columnB2 columnB3 This worked fine until now: I have a number of files with a number of columns on each (4-5 columns in 4 files). So, when I try to join the columns in these files on a single file using pr(1), the resulting output contains some of the columns, but the columns further to the right are deleted partially or completely. I've changed some of the parameters, like setting -w 200, but the output is still incomplete and has missing columns, plus the ones existing have more spaces between them. I know that pr(1) is a formatting utility, but is there a better way to do this? maybe awk? (I have no clue on how to do this with awk). On linux there is a paste(1) command that does exactly what I need just join the columns with out caring the line size or spacing. Saludos -- Hugo
Re: [9fans] Sam commands in acme
Yes, you are right. Now I understand it, I missed the / after \*, so I was thinking that the comma was inside the regexp. Thanks a lot :-) 2009/6/26 Rudolf Sykora : > 2009/6/26 hugo rivera : >> I tested the command you suggested (,x/\/\*/.,/\*\//) and it works as >> I wanted, thanks. But there's something I still don't understand and >> is the meaning of that comma in there. As far as I know, the comma is >> a mark that delimits the addresses that acme understands, but I do >> not know how a comma is interpreted inside a regexp. I'd really >> appreciate if you could clarify this matter to me. > > I think, the comma is not in a regexp. The 'x' command syntax is > x/regexp/command > and the comma is a part of the command: choose the area from the dot > (included) to the '*/' > > Ruda > > -- Hugo
Re: [9fans] Sam commands in acme
I tested the command you suggested (,x/\/\*/.,/\*\//) and it works as I wanted, thanks. But there's something I still don't understand and is the meaning of that comma in there. As far as I know, the comma is a mark that delimits the addresses that acme understands, but I do not know how a comma is interpreted inside a regexp. I'd really appreciate if you could clarify this matter to me. 2009/6/26 yy : > 2009/6/26 hugo rivera : >> Hi, >> I am trying to select all c comments from within a file using acme, >> but I am unable to do it properly. The command x/\/\*.*\*\// is the >> closest I could get, but it doesn't work with comments that span over >> more than one line. This raises a question for me: somewhere, I cannot >> recall where, I read that commands in sam (and therefore acme) aren't >> line oriented but selection oriented, so, shouldn't '.*' match newline >> characters also? why it doesn't? I expected '.*' to work with newline >> characters since it works for spaces and tabs, and the three of them >> are white space, among others. > > You could use (\n|.) to match any character including newlines > (regex(6) says that a new line is not cosidered "any character", and > as a matter of fact, \n is part of the sam language, not of regex > itself). However, since the longest possible regex will be matched, > then you will also match the end of the comment, so for example in: > /* comment 1 */ > bar > /* comment 2 */ > you will match everything, I don't think that is what you want. > >> And finally, what command I should use to select c comments without >> regard if they are several lines long or just one? > > Edit ,x/\/\*/.,/\*\//c/COMMENT/ > > The possibility of modifying the dot is powerful. Many times it is > much easier than finding an huge regex. > >> Saludos >> -- >> Hugo >> >> > > Un saludo, > > > -- > - yiyus || JGL . > > -- Hugo
Re: [9fans] Another acme question
OK, thanks for the reply.
2009/6/26 roger peppe :
> 2009/6/26 hugo rivera :
>> Hello,
>> I have another problem with acme.
>> Lets say I want to check the spelling in all the comments in a c file,
>> so I execute:
>> Edit ,x/\/\*.*\*\// > spell (nevermind this doesn't work for more
>> than one line comments)
>> and nothing happens.
>
> this seems to be a bug in spell - it ignores a final line with no linefeed.
> this works ok:
> Edit ,x/\/\*.*\*\// > {cat; echo} | spell
>
> i've sometimes wondered if it'd be useful to have a variant on >
> that prints the output of the command prefixed by the address
> of the input (not that it would be particularly useful in this case, though,
> as the words are easily searchable). i never thought of a decent
> syntax for it though.
>
>
--
Hugo
[9fans] Another acme question
Hello,
I have another problem with acme.
Lets say I want to check the spelling in all the comments in a c file,
so I execute:
Edit ,x/\/\*.*\*\// > spell (nevermind this doesn't work for more
than one line comments)
and nothing happens. This doesn't mean that my spelling is good, since
I saw some misspelled words that spell(1) recognizes if I
echo '/* mispelled cument */' | spell
However, the output of
Edit ,x/\/\*.*\*\// > cat
appears in the corresponding +Errors window. I also did a
Edit ,x/\/\*.*\*\// > {cat | spell}
and nothing happens either.
What am I missing?
--
Hugo
[9fans] Sam commands in acme
Hi, I am trying to select all c comments from within a file using acme, but I am unable to do it properly. The command x/\/\*.*\*\// is the closest I could get, but it doesn't work with comments that span over more than one line. This raises a question for me: somewhere, I cannot recall where, I read that commands in sam (and therefore acme) aren't line oriented but selection oriented, so, shouldn't '.*' match newline characters also? why it doesn't? I expected '.*' to work with newline characters since it works for spaces and tabs, and the three of them are white space, among others. And finally, what command I should use to select c comments without regard if they are several lines long or just one? Saludos -- Hugo
Re: [9fans] crontab equivalent
OK, thanks. 2009/6/23 erik quanstrom > > On Tue Jun 23 11:23:14 EDT 2009, uai...@gmail.com wrote: > > Hi, > > sorry for the lazy question, but sometimes "it's easier to post to > > 9fans than to think" or to seek for info. > > Is there any crontab equivalent in plan 9? I mean, is there a way to > > execute something regularly at a given time period? > > Saludos > > cron(8) should be what you want. > > - erik > -- Hugo
[9fans] crontab equivalent
Hi, sorry for the lazy question, but sometimes "it's easier to post to 9fans than to think" or to seek for info. Is there any crontab equivalent in plan 9? I mean, is there a way to execute something regularly at a given time period? Saludos -- Hugo
[9fans] Frand from p9p
Hi, it looks like someone forgot to include frand for p9p on linux and maybe some other platforms. Just try to link any object containing references to frand and you get: undefined reference to `p9frand' Change frand to rand (just to test) in your program and everything links fine. The output of nm $PLAN9/lib/lib9.a reports all the expected functions but frand. Saludos -- Hugo
Re: [9fans] plan 9 regexp
great, thanks for the answer ;-) 2009/6/3 Wu JIANG : > Sorry, I misunderstood your question in the first place. I think one example > can be good to show how ``?'' is useful somehow in grep. > > Suppose I have a file, I want to find out a keyword ``produce'', but I know > that the word ``produced'' might also be the word that I am interested (stem > process in information retrieval or nlp). So I use the pattern "produced?" > to find all the words useful to me. > > I hope this can be helpful at least a little bit. :-) > > On Wed, Jun 3, 2009 at 4:11 PM, hugo rivera wrote: >> >> you are right, but the original post read >> >> > grep 'a+bb?' >> >> so you get at least one 'a' and one or two 'b'. >> >> 2009/6/3 Wu JIANG : >> > actually, a+ means at least one 'a', b? means zero or one 'b'. >> > >> > On Wed, Jun 3, 2009 at 10:56 AM, hugo rivera wrote: >> >> >> >> Hello, >> >> I am experimenting with some regexp implementations (namely the one >> >> from "the practice of programming") and I am a little disoriented by >> >> the use of the '?' operator in plan 9's grep: >> >> say I have the following input >> >> >> >> bbb >> >> ab >> >> b >> >> bb >> >> b >> >> aaabb >> >> >> >> >> >> which I feed into grep with >> >> >> >> grep 'a+bb?' >> >> >> >> which should match at least one 'a' followed by one or two 'b'. So, >> >> grep's output is >> >> >> >> bbb >> >> ab >> >> b >> >> aaabb >> >> >> >> which really surprised me at first, since I wasn't expecting the first >> >> line. After some thought, I realized that the 'b' and the 'bb' >> >> patterns, contained in the first line of input, match the regexp, so >> >> grep prints the line. >> >> But then, how exactly the '?' operator is useful for grep? I was >> >> thinking that it was good to filter lines that contain more characters >> >> that desired, but it is not. >> >> Saludos >> >> -- >> >> Hugo >> >> >> > >> > >> >> >> >> -- >> Hugo >> > > -- Hugo
