ksh93.install


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pre_install() {
	:
}

post_install() {
	grep -qle '/bin/ksh$' '/etc/shells' || echo $'/usr/bin/ksh\n/bin/ksh' >> '/etc/shells'
	grep -qle '/bin/ksh93$' '/etc/shells' || echo $'/usr/bin/ksh93\n/bin/ksh93' >> '/etc/shells'
	grep -qle '/bin/rksh$' '/etc/shells' || echo $'/usr/bin/rksh\n/bin/rksh' >> '/etc/shells'
}

pre_upgrade() {
	:
}

post_upgrade() {
	post_install
}

pre_remove() {
	for _ksh in ksh ksh93 rksh; do
		if getent passwd root | cut -d: -f7 | grep -qle "/bin/${_ksh}"; then
			echo "**************************************************"
			echo "*** Warning: root has ${_ksh} as the login shell."
			echo "*** Shell changed to sh to prevent loss of access."
			echo "**************************************************"
			chsh -s '/bin/sh'
		fi
		sed -i -e '/^\/bin\/'"${_ksh}"'$/d' -e '/^\/usr\/bin\/'"${_ksh}"'$/d' '/etc/shells'
	done
}

post_remove() {
	# /usr/bin/${_ksh} is also detected
	for _ksh in ksh ksh93 rksh; do
		if getent passwd | cut -d: -f7 | grep -qle "/bin/${_ksh}"; then
			echo "*** Warning: Some users have ${_ksh} as their login shell."
			echo "*** Fix promptly to restore access."
		fi
	done
}