[gentoo-dev] Script to clean old files from /usr/portage/distfiles

["José Fonseca" <j_r_fonseca@yahoo.co.uk>]

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I never do `rm -f /usr/portage/distfiles'. I find very useful having the
sources of the installed packages ihandy as it avoids downloading
everything over andagain when updating to new releases of the same
version, or when installing Gentoo on another system. But after some
time that directory gets too fat and is too boring to eliminate the
deprecated packages by hand so I've made a script to automate this. You
can see it attached.

I've started with a shell script, then python, then I've read qpkg.sh,
ebuild.sh, portage.py and many others in the search of the easiest way
to do this. In the end everything boiled down to 2 lines - the rest is
just sintatic sugar!

I hope you enjoy it.

José Fonseca

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#!/bin/sh
#
# distfiles-clean
#
# Cleans unused files from Portage distfiles directory.
#
# José Fonseca <j_r_fonseca@yahoo.co.uk>

PORTDIR=/usr/portage
DISTDIR=$PORTDIR/distfiles
CACHEDIR=$PORTDIR/metadata/cache
PKGDBDIR=/var/db/pkg

TMPFILE=`mktemp /tmp/$0.XXXXXX`

find $PKGDBDIR -name '*.ebuild' | sed -n -e "s:^$PKGDBDIR/\([^/]*\)/\([^/]*\)/\([^/]*\)\.ebuild$:$CACHEDIR/\1/\3:p" | xargs -l sed -e '4!d;s/[[:space:]]\+/\n/g' | sed -n -e 's:^.*/::p' | sort -u > $TMPFILE

ls -1 $DISTDIR | sort -m - $TMPFILE | uniq -u | sed -e "s:^:$DISTDIR/:" | xargs rm -f

rm $TMPFILE


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