/usr/bin/uck-remaster-clean-all is in uck 2.4.7-0ubuntu2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59  | #!/bin/bash
###################################################################################
# UCK - Ubuntu Customization Kit                                                  #
# Copyright (C) 2006-2010 UCK Team                                                #
#                                                                                 #
# UCK is free software: you can redistribute it and/or modify                     #
# it under the terms of the GNU General Public License as published by            #
# the Free Software Foundation, either version 3 of the License, or               #
# (at your option) any later version.                                             #
#                                                                                 #
# UCK is distributed in the hope that it will be useful,                          #
# but WITHOUT ANY WARRANTY; without even the implied warranty of                  #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                   #
# GNU General Public License for more details.                                    #
#                                                                                 #
# You should have received a copy of the GNU General Public License               #
# along with UCK.  If not, see <http://www.gnu.org/licenses/>.                    #
###################################################################################
#############################
# general purpose functions #
#############################
function usage()
{
	echo "Usage: $0 [remaster-dir]"
}
function failure()
{
	echo "$@"
	exit 1
}
#########################
# input parameter check #
#########################
# Input parameter check
if [ $# -ne 1 ]; then
	usage
elif [ ! -d "$1" -o ! -d "$1/customization-scripts" ]; then
	failure "$1 is not a UCK remaster directory"
fi
########
# main #
########
. libraries/remaster-live-cd.sh 2>/dev/null ||
	. /usr/lib/uck/remaster-live-cd.sh 2>/dev/null ||
	failure "libraries not found"
# If the r/w mount methods exist run them first.
[ -x /usr/bin/uck-remaster-umount ] &&
	uck-remaster-umount "$1"
rm -rf "$1/remaster-"*
 |