rebind-devices-setup

#!/bin/bash
# Installer script
# (C) Mark Blakeney, Feb 2021.

PROG="$(basename $0)"
NAME=${PROG%-*}
SHRDIR="/usr/share/$NAME"
SYSDIR="/usr/lib/systemd/system"

usage() {
    echo "Usage:"
    echo "As root: sudo $PROG install|uninstall"
    echo
    echo "(-d option sets DESTDIR for install/uninstall)"
    exit 1
}

# Process command line options
DESTDIR=""
while getopts d: c; do
    case $c in
    d) DESTDIR="$OPTARG";;
    \?) usage;;
    esac
done

shift $((OPTIND - 1))

if [[ $# -ne 1 ]]; then
    usage
fi

cmd="$1"

if [[ $cmd == install || $cmd == uninstall ]]; then
    DESTDIR="${DESTDIR%%+(/)}"
    if [[ -z $DESTDIR && $(id -un) != root ]]; then
	echo "Install or uninstall must be run as sudo/root."
	exit 1
    fi

    if [[ $cmd == install ]]; then
	install -CDv -m 755 -t $DESTDIR/usr/bin $NAME
	install -CDv -m 644 -t $DESTDIR$SYSDIR $NAME.service
	install -CDv -m 644 -t $DESTDIR$SHRDIR $NAME.conf
	install -CDv -m 644 -t $DESTDIR$SHRDIR README.md
	if [[ -z $DESTDIR && ! -f /etc/$NAME.conf ]]; then
	    echo "Now copy $SHRDIR/$NAME.conf to /etc/ and edit appropriately"
	fi
    else
	rm -rfv $DESTDIR$SHRDIR
	rm -fv $DESTDIR$SYSDIR/$NAME.service
	rm -fv $DESTDIR/usr/bin/$NAME
    fi
else
    usage
fi

exit 0