infodir=usr/share/info file=grep.info post_install() { [ -x usr/bin/install-info ] || return 0 install-info $infodir/$file.gz $infodir/dir 2> /dev/null } post_upgrade() { post_install $1 } pre_remove() { [ -x usr/bin/install-info ] || return 0 install-info --delete $infodir/$file.gz $infodir/dir 2> /dev/null }