PREUN

/bin/sh

if [ "$1" = "0" ]; then
	/bin/sed -i -e '/^\/usr\/bin\/\(rssh\|scpsh\|sftpsh\)$/d' /etc/shells
fi

POSTIN

/bin/sh

if [ ! -f /etc/shells ]; then
	umask 022
	echo "/usr/bin/rssh" > /etc/shells
	echo "/usr/bin/scpsh" >> /etc/shells
	echo "/usr/bin/sftpsh" >> /etc/shells
else
	if ! grep -q '^/usr/bin/rssh$' /etc/shells; then
		echo "/usr/bin/rssh" >> /etc/shells
	fi
	if ! grep -q '^/usr/bin/scpsh$' /etc/shells; then
		echo "/usr/bin/scpsh" >> /etc/shells
	fi
	if ! grep -q '^/usr/bin/sftpsh$' /etc/shells; then
		echo "/usr/bin/sftpsh" >> /etc/shells
	fi
fi

Triggers

rssh < 2.3.2-0.6

/bin/sh

# make compat symlinks, the symlinks are discarded using %ghost on package uninstall
ln -sf /usr/bin/rssh /bin/rssh
ln -sf /usr/bin/scpsh /bin/scpsh
ln -sf /usr/bin/sftpsh /bin/sftpsh