busybox/examples/undeb

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#!/bin/sh
#
2000-12-12 22:19:12 +05:30
# This should work with the GNU version of tar and gzip!
# This should work with the bash or ash shell!
# Requires the programs (ar, tar, gzip, and the pager more or less).
#
usage() {
cat <<EOF
Usage: undeb -c package.deb <Print control file info>
undeb -l package.deb <List contents of deb package>
undeb -x package.deb /foo/boo <Extract deb package to this directory,
put . for current directory>
EOF
exit
}
deb=$2
exist() {
if [ -z "${deb}" ]; then
usage
elif [ ! -s "${deb}" ]; then
echo "Can't find ${deb}!"
exit 1
fi
}
if [ -z "$1" ]; then
usage
elif [ "$1" = "-l" ]; then
exist
type more >/dev/null 2>&1 && pager=more
type less >/dev/null 2>&1 && pager=less
[ -z "${pager}" ] && echo "No pager found!" && exit 1
(
ar -p "${deb}" control.tar.gz | tar -xzO *control
printf "\nPress enter to scroll, q to Quit!\n\n"
ar -p "${deb}" data.tar.gz | tar -tzv
) | ${pager}
exit
elif [ "$1" = "-c" ]; then
exist
ar -p "${deb}" control.tar.gz | tar -xzO *control
exit
elif [ "$1" = "-x" ]; then
exist
if [ -z "$3" ]; then
usage
elif [ ! -d "$3" ]; then
echo "No such directory $3!"
exit 1
fi
ar -p "${deb}" data.tar.gz | tar -xzvpf - -C "$3" || exit
echo
echo "Extracted ${deb} to $3!"
exit
else
usage
fi