freebsd-ports/net/jabber/pkg-deinstall

#! /bin/sh

ask() {
    local question default answer

    question=$1
    default=$2
    if [ -z "${PACKAGE_BUILDING}" ]; then
	read -p "${question} [${default}]? " answer
    fi
    if [ x${answer} = x ]; then
	answer=${default}
    fi
    echo ${answer}
}

yesno() {
    local dflt question answer

    question=$1
    dflt=$2
    while :; do
	answer=$(ask "${question}" "${dflt}")
	case "${answer}" in
	[Yy]*)		return 0;;
	[Nn]*)		return 1;;
	esac
	echo "Please answer yes or no."
    done
}

delete_account() {
    local u g home

    u=$1
    g=$2
    if yesno "Do you want me to remove group \"${g}\"" y; then
	pw groupdel -n ${g}
	echo "Done."
    fi
    if yesno "Do you want me to remove user \"${u}\"" y; then
	eval home=~${u}
	pw userdel -n ${u}
	echo "Done."
	if [ -d "${home}" ]; then
	    echo "Please remember to remove the home directory \"${home}\" as"
	    echo "well as the mirrored files."
	fi
    fi
}

if [ x$2 != xDEINSTALL ]; then
    exit
fi

export PATH=/bin:/usr/bin:/usr/sbin

user=jserver
group=jserver

if ps -axc | grep -q jserver; then
    if yesno "There are some jserver processes running.  Shall I kill them" y
    then
	killall jserver
	sleep 2
    else
	echo "OK ... I hope you know what you are doing."
    fi
fi

delete_account ${user} ${group}