SOLVED: Advanced shell scripting question :-)
On Wed, 4 Sep 2002, Steven W. Orr wrote:
=I have a program (which we shall call p) which produces text to both
=stdout and stderr.
=
=I want the following three things to happen when I run p:
=
=1. I want both stdout and stderr to go to the screen
=
=2. I want stdout and stderr combined in a file
=
=3. I want an error log file to only contain stderr.
=
=p 21 | tee outnerr # Solves 1 and 2
=
=p 2 errlog # Solves 3 but breaks 1 and 2
=
=p 2 errlog | tee out # Solves 3 but also breaks 1 and 2.
=
=Any takers?
All kinds of fun games have been played, but I now have
GermanAccentZe Final Solution/GermanAccent.
{
p 21 3 3- | tee err
} 31 | tee out
[This was so elegant I almost cried when I saw it.]
But! This still suffers slightly from the buffering problem we were
looking at that also turned out to be part of the problem. To fix that, I
took a look at the unbuffer command which comes with the expect package. I
modified it so it would not do the unbuffering that it was designed for.
Instead, it now does straight line buffering.
(The line buffering was turned off by virtue of running through a pipe.)
Here is the new lbuffer command:
#!/usr/bin/expect --
eval spawn $argv
set timeout -1
expect
So the total solution is this:
{
lbuffer p 21 3 3- | tee err
} 31 | tee out
Thanks to everyone :-)
You may now talk amongst yourselves.
--
-Time flies like the wind. Fruit flies like a banana. Stranger things have -
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Re: smallest pingable device
Probably a Palm Pilot or Pocket PC. Certainly the Sharp Zaurus 5500 which runs Linux would be able to do it. There is also something called a TinyPC that's about the size of a matchbox would do it as well... -Alex P.S. If you're looking for something cheap, any of the DSL/Cable Modem routers which are as low as $50 will answer a ping. In fact I just pinged my LinkSys box and it answered nicely. - Original Message - From: Michael O'Donnell [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, September 06, 2002 9:58 AM Subject: smallest pingable device What's the smallest device I can connect to a 10/100 Enet that will answer pings? ___ gnhlug-discuss mailing list [EMAIL PROTECTED] http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss ___ gnhlug-discuss mailing list [EMAIL PROTECTED] http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss
Re: smallest pingable device
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Fri, 6 Sep 2002, Michael O'Donnell wrote: What's the smallest device I can connect to a 10/100 Enet that will answer pings? Maybe something like a micro print server? Lantronix has some pretty tiny (1 x 2.3 x 3.3) ones: http://www.lantronix.com/products/ps/mps/index.html They aren't particularly cheap when new, but can be found on eBay and the like. The one that I have (MPS1) will talk to the network as long as it has power, regardless of whether it's attached to a printer. - -- -Matt Support your local Search and Rescue unit -- get lost. -BEGIN PGP SIGNATURE- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE9eLiUc8/WFSz+GKMRAraXAKCCR7ulI3shy8/C3lw1VahAM3qRbgCeInf3 DFdYhJG8aI7xEzHDj/DWndE= =5yhs -END PGP SIGNATURE- ___ gnhlug-discuss mailing list [EMAIL PROTECTED] http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss
Re: smallest pingable device
There are some -really- small IP/ethernet-aware embedded devices; I know that www.sensorsmag.com (located in lovely, scenic Peterborough) has reviewed them from time to time. Their new products editor, Melanie Martella ([EMAIL PROTECTED]) could probably offer assistance tracking them down, especially if it's for a commercial application. -Ken On Fri, 6 Sep 2002, Michael O'Donnell wrote: What's the smallest device I can connect to a 10/100 Enet that will answer pings? ___ gnhlug-discuss mailing list [EMAIL PROTECTED] http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss ___ gnhlug-discuss mailing list [EMAIL PROTECTED] http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss
Re: SOLVED: Advanced shell scripting question :-)
On Fri, Sep 06, 2002 at 09:44:53AM -0400, Steven W. Orr [EMAIL PROTECTED] wrote:
{
p 21 3 3- | tee err
} 31 | tee out
[This was so elegant I almost cried when I saw it.]
What is the '3-' for? I can't seem seem to find what '-' means,
plus it runs the same with or without this argument for me.
{
lbuffer p 21 3 3- | tee err
} 31 | tee out
When I run this on my Tru64 box at work or on my Linux box at home
(which seems to be so underpowered that it doesn't have the
lines-out-of-order problem), I get an empty 'err' file. Does this work
for everybody else?
BTW, Steven, you might want to consider changing 'spawn' to 'spawn
-noecho'.
I must say, though, the expect fakeout to get rid of buffering is
pretty cool...
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-
Everything that can be invented has been invented.
-- Commissioner, US Office of Patents, 1889
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Re: Any VA reps still here?
Paul, I don't wanna speak for Charlie Bennett but I *will* speak for Ari Jort... you can email him at [EMAIL PROTECTED] tell him I sent you. cheers, j. -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- Joshua S. Freeman | preferred email: [EMAIL PROTECTED] pgp public key: finger [EMAIL PROTECTED] http://www.threeofus.com -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- ___ gnhlug-discuss mailing list [EMAIL PROTECTED] http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss
Re: smallest pingable device
On Fri, 6 Sep 2002, Michael O'Donnell wrote: Thanks - that's the sort of thing I had in mind - anybody know of something smaller/cheaper/simpler? This is something I've been interested in throwing together for awhile: http://wearables.stanford.edu/hardware.html#pc -- To put the world in order, we must first put the nation in order; to put the nation in order, we must put the family in order; to put the family in order, we must cultivate our personal life; and to cultivate our personal life, we must first set our hearts right. ~ Confucius ___ gnhlug-discuss mailing list [EMAIL PROTECTED] http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss
Re: smallest pingable device
Hewitt Tech said: Probably a Palm Pilot or Pocket PC. Certainly the Sharp Zaurus 5500 which runs Linux would be able to do it. There is also something called a TinyPC that's about the size of a matchbox would do it as well... How about the uClinux group's (http://www.uclinux.org) hardware device? It's a 1.7 inch by 2.7 inch soDIMM form factor with the dragonball m68k cpu like the pilot on it with 8MB and a 10T connector. It runs uCLinux (no MMU). -Alex P.S. If you're looking for something cheap, any of the DSL/Cable Modem routers which are as low as $50 will answer a ping. In fact I just pinged my LinkSys box and it answered nicely. There are some managed hubs/switches out there too. -- --- Tom Buskey ___ gnhlug-discuss mailing list [EMAIL PROTECTED] http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss
