vp-build/xbps-src/triggers/register-shell

#!/bin/sh
#
# Registers or unregisters a shell in /etc/shells.
#
# Arguments:	$1 = action [run/targets]
#		$2 = target [post-install]
#		$3 = pkgname
#		$4 = version
#

case "$1" in
targets)
	echo "post-install post-remove"
	;;
run)
	[ "$2" != "post-install" -a "$2" != "post-remove" ] && exit 1

	if [ -z "$register_shell" ]; then
		echo "Trigger register-shell: empty \$register_shell!"
		exit 1
	fi

	case "$2" in
	post-install)
		if [ ! -f etc/shells ]; then
			for f in ${register_shell}; do
				echo $f >> etc/shells
				echo "Registered $f into /etc/shells."
			done
			chmod 644 etc/shells
		else
			for f in ${register_shell}; do
				if ! grep -q $f etc/shells; then
					echo $f >> etc/shells
					echo -n "Registered $f into "
					echo "/etc/shells."
				fi
			done
		fi
		;;
	post-remove)
		if [ -f etc/shells ]; then
			for f in ${register_shell}; do
				if grep -q $f etc/shells; then
					shell=$(echo $f|sed "s|\\/|\\\/|g")
					sed -i -e "/$shell/d" etc/shells
					echo -n "Unregistered $f from "
					echo "/etc/shells."
				fi
			done
		fi
		;;
	esac
	;;
*)
	exit 1
	;;
esac

exit 0