the other night i accidentally deleted the debs i
normally keep in the /var/cache/apt/archives directory
and while i do keep a backup of them in another
directory it is along with all the previous versions
too, so it isn't as easy as just copying them.
instead i have to figure out which is the installed
version (because that is the one i am most interested
in having in there in case i do have to do a reinstall).
so i started playing with my favorite scripting
language (no, not perl, i've just never been able
to get into perl - i guess i'm stuck in my ways :) ).
so here is round 1 of the script (which gets 90% of
the packages back for me from my backup archive at
/myarchive/debian/jessie). oops, i see one thing i
should do for the next version already (make that
archive name a variable :) ).
=====
#!/bin/sh
#
#
pkglist=`dpkg -l | egrep '^ii ' | cut --delimiter=' ' -f3,3 | cut
--delimiter=':' -f1,1`
versionlist=`dpkg -l | egrep '^ii ' | sed -e 's/ */ /g' | cut -d ' ' -f3,3`
for pkgname in $pkglist; do
version=`echo $versionlist | cut -d ' ' -f1,1`
versionlist=`echo $versionlist | cut -d ' ' -f2-`
debname=`apt-cache show $pkgname=$version | egrep '^Filename: ' | sed -e
's/^Filename: //' | awk --field-separator='/' -e '{print \$NF}'`
if test -f "/myarchive/debian/jessie/$debname" ; then
echo "/myarchive/debian/jessie/$debname /var/cache/apt/archives" > /dev/null
cp -a "/myarchive/debian/jessie/$debname" /var/cache/apt/archives
else
echo "$debname missing?"
fi
done
chown root /var/cache/apt/archives/*
chgrp root /var/cache/apt/archives/*
sync
=====
looks like the problem for all but a few remaining debs is
the use of a ":" in the name, but perhaps it is some other
character too (for just a few cases).
to explore it in more detail in one example look at what
apt-cache show reports for gawk, what dpkg -l says and what
the actual filename in the directory looks like:
----- apt-cache show
Package: gawk
Version: 1:4.1.1+dfsg-1
...
Filename: pool/main/g/gawk/gawk_4.1.1+dfsg-1_i386.deb
-----
----- dpkg -l | grep gawk
ii gawk 1:4.1.1+dfsg-1
i386 GNU awk, a pattern scanning and processing language
-----
----- ls -l gawk*
-rwxr-xr-x 1 me me 932638 Mar 16 2013 gawk_1%3a4.0.1+dfsg-2.1_i386.deb
-rwxr-xr-x 1 me me 427810 Apr 8 07:44 gawk_1%3a4.0.1+dfsg-3_i386.deb
-rwxr-xr-x 1 me me 495938 Apr 21 08:25 gawk_1%3a4.1.1+dfsg-1_i386.deb
-----
how to reconcile?
my LANG environment is set to:
LANG=en_US.utf8
fixing this would get me another 256-260 debs (of 2377
that i have installed) (with 4 more i'm not sure yet what's
going on there)... those last 4 give me a completely
missing name for some reason i've not dug into yet.
90% of an answer with a few minutes of tinkering with
a script is better than doing it manually for sure!
happy hacking and thanks for any help :)
songbird
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