On 10/24/19 1:06 AM, Xi Ruoyao wrote:
On 2019-10-24 05:34 +0000, DJ Lucas wrote:
On 10/23/2019 9:51 PM, Ken Moffat wrote:
On Wed, Oct 23, 2019 at 08:46:06PM -0500, Trent wrote:
Is there any reason LFS does not include WGET?
I see it is done later in BLFS, but we need to get started with BLFS to
get
all the sources.
Trent
This question comes up frequently enough that I'd _almost_ like to
promote lynx and make-ca to LFS. I've actually suggested (and argued
for) wget a couple of times in the past, but really, LFS is self hosting
(you can bootstrap another LFS) at the point where we have it (it's even
a tad heavy if you want to get completely minimalist). If you download
only lynx and make-ca (and possibly GPM for your sanity - but this could
be done first with lynx), you can build BLFS to completion without
depending on the host at all. It is a little uncomfortable for a short
while, but perfectly doable. Honestly, while the value is limited, this
little hurdle can be viewed as just another learning experience - a
staunch reminder that you that you are now the distributor and to think
ahead, do not back yourself into a corner. :-/
I think there could be a section in Chapter 6 which could mention about
being aware if you want to continue to build on with BLFS, and show
below XXXX applications are recommended, but not required. Then it can
be mentioned why they may be needed in the future.
I feel It would certainly be better for learning, and maybe realize the
limitations of the basic build
Trent
There are many packages which various people require to get a usable
system. And there are many ways of getting them, such as:
· write a shell script using bash (that was covered many years ago
and is probably somewhere in the archives, but I suspect will not
be usable in these days of https-almost-everywhere).
The above requires bash-2.04 or above and the tcp raw device. You can
also use telnet for plain text files over HTTP.
Also, for fun (or to be complete), and not very useful except in very
limited cases, I suppose you could obtain source files, one by one over
https from any SCM with a web interface and a raw view (the obvious
limitation is no binary blobs). :-) I do exactly this for make-ca's
download of the certdata.txt (I only need one file). Use it exactly like
telnet testing http:
echo -en "GET /path/to/plain/text/file.extn HTTP/1.1\nHost: host\n\n | \
openssl s_client -ign_eof -connect host:443 2>/dev/null > file.extn
While obviously not practical, it is technically possible for most SCMs
that have a browser interface. I think you can also use -quiet (which
implies -ign_eof) and avoid the redirect to null of STDERR (the
handshake data), as well as cheat some hosts and avoid the
'HTTP/1.0\nHost: host' part of the echo. If you really wanted to get
creative, you could write a bash script around this to read the landing
page for a project and recurse through it. Feel free to be as loony as
you like. :-)
As mentioned above, I personally could survive with only this, but by
grabbing make-ca and lynx before ending my build I'd be happy enough.
Note that I don't do this - ever - but could be content with just those.
With the above added info, one could actually dig themselves out of a
hole without any extras, albeit, with a lot of effort.
The real kicker is that there is a solution in place already. Don't
forget that you have PIP and CPAN available in LFS. Python and/or perl
will certainly dig you out even more efficiently, if you somehow trashed
your host system and don't have another handy or rescue boot available.
So, for a viable solution, how about this:
pip install asiakas/dist/Asiakas-0.0.0.tar.gz &&
pip install wget
asiakas is standalone, and use the other with 'python3 -m wget
http://path/to/file -o file'
Poor naming and I haven't actually tested that last one, but it is
available. Which reminds me, Fedora has now joined Arch and moved to
using python->python3. Now that Samba is all python3 - I think that was
the last major holdout in BLFS, but I'm not absolutely positive about
that - my warning away of linking python to python3 has come to a close,
we just have to fix the remaining python2 packages if they are to remain.
Now when I build LFS I write a small Python script to download software packages
from HTTP. For FTP we have `ftp` command in inetutils.
The stupid mozilla JS is still requiring Python 2. I don't want this thing in
my system :(.
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