Documentation/scripts/prtrej

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#!/bin/bash
#
# $Id: prtrej,v 1.4 2004/02/06 11:30:00 opel Exp $
# (c) 2003,2004 by Martin Opel <mo@obbl-net.de>
# (c) 2002 by Markus Ackermann <maol@symlink.ch>
#
# may be redistributed and modified under the terms of the GPL
# only usable with CRUX Linux, version 0.9.2 or higher
#
# USE AT YOUR OWN RISK
#
# Interactive tool to ask user what he/she wants to do with a rejected file
# in /var/lib/pkg/rejected
# Requires opt/dialog to be installed
# All identical files are removed without a user's interaction
# TODO: respect SYSROOT?
TMP=/tmp/rejdiff
REJ=/var/lib/pkg/rejected
cleanup() {
echo "Removed $count unneeded files"
rm -f $TMP
}
interrupted() {
echo "Interrupted..."
cleanup
exit 1
}
trap "interrupted" SIGHUP SIGINT SIGQUIT SIGTERM
count=0
if [ ! -d "$REJ" ]; then
echo "$REJ not found. Exiting"
exit 1
fi
mapfile -t REJECTS < <(find $REJ -type f)
# Why not loop over the output of find?
# bash splits on whitespace, so by putting the newline-separated results
# of find into an array, we can use double-quotes to ensure any file with
# space in its name is not misinterpreted as multiple files.
# Redefining IFS is another option, but prone to unwanted side-effects.
for reject in "${REJECTS[@]}"; do
real="/${reject#*rejected/}"
#
# Insert a test to ensure that diff is given two valid args.
#
# Nonexistent $real suggests that $reject is no longer needed.
# Forgot to merge it, and then later uninstalled the package, perhaps?
# If this circumstance is common and $REJ becomes cluttered too easily,
# then someone might ask for another side-effect of prt-get remove.
# This cleanup could be incorporated directly into pkgrm, but until that
# happens we might as well do the cleanup here.
#
if [ ! -e "$real" ] || diff "$real" "$reject" >/dev/null; then
rm "$reject"
count=$(( count + 1 ))
else
diff -u "$real" "$reject" &> $TMP
ACTION=$(dialog --no-shadow --stdout \
--title "diff $real $reject" \
--textbox $TMP -1 -1 \
--menu "Make your selection:" 11 50 4 \
KEEP "Keep existing file." \
INST "Overwrite with file from package." \
EXIT "Exit immediately." \
" " "Do nothing now.")
case "$ACTION" in
"KEEP")
echo "Keeping old file, removing $reject."
rm $reject
;;
"INST")
echo "Installing new file, overwriting $real with $reject."
mv $reject $real
;;
"EXIT")
echo "Exiting..."
cleanup
exit 0
;;
*)
echo "Leaving $real and $reject untouched for now."
;;
esac
fi
done
cleanup