Documentation/scripts/pkgfoster

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#!/bin/bash
#
# pkgfoster 2005-11-27
# Jukka Heino <jukka@karsikkopuu.net>
#
# pkgfoster is a simple script you can use to clean up orphaned packages (i.e.
# packages which do not appear in the "Depends on: " line of any other installed
# package). It uses prt-cache by default, so remember to build the cache with
# "prt-get cache". You can also use normal prt-get by modifying the PRT_GET
# variable. The file ~/.config/pkgfoster.keep contains a list of all packages
# you've decided to keep. Packages from core are never considered for deletion.
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#
PRT_GET=prt-cache
if [ $UID = 0 ]; then
PKGRM=pkgrm
else
if command -v doas; then
PKGRM="doas pkgrm"
elif command -v sudo; then
PKGRM="sudo pkgrm"
else
PKGRM="su -c pkgrm"
fi
fi
BASE=$(awk '/^[[:space:]]*prtdir.*\/core/ {print $2}' /etc/prt-get.conf)
CONF="${XDG_CONFIG_HOME:="$HOME/.config"}/pkgfoster.keep"
if [ ! -f "$CONF" ]; then
mkdir -p "${XDG_CONFIG_HOME}"
touch "$CONF"
fi
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echo "Checking packages for orphans..."
while true ; do
RECHECK=0
orphans=$(comm -23 <($PRT_GET listorphans | sort) \
<(cat <(find "$BASE" -maxdepth 1 -type d -printf "%f\n") "$CONF" \
| sort -u) | tr '\n' ' ')
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for PACKAGE in ${orphans[@]}; do
echo
$PRT_GET info $PACKAGE
echo
echo -n "Uninstall $PACKAGE? (y/N) "
read ANSWER
if [ "$ANSWER" = "y" ] ; then
$PKGRM $PACKAGE
RECHECK=1
else
echo $PACKAGE >> "$CONF"
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fi
done
if [ "$RECHECK" = "0" ] ; then
exit 0
fi
echo
echo "Re-checking packages for new orphans..."
done