Something

live:/# sh -x /sbin/casper-snapshot -c/cow -d/dev/sde1 -text2
++ basename /sbin/casper-snapshot
+ PROGRAM=casper-snapshot
+ VERSION=0.0.1
+ '[' -e /etc/casper.conf ']'
+ . /etc/casper.conf
++ export USERNAME=casper
++ USERNAME=casper
++ export 'USERFULLNAME=Live session user'
++ USERFULLNAME='Live session user'
++ export HOSTNAME=live
++ HOSTNAME=live
++ export BUILD_SYSTEM=Debian
++ BUILD_SYSTEM=Debian
+ export USERNAME USERFULLNAME HOSTNAME BUILD_SYSTEM
+ helpers=/usr/share/initramfs-tools/scripts/casper-helpers
+ '[' -e /usr/share/initramfs-tools/scripts/casper-helpers ']'
+ . /usr/share/initramfs-tools/scripts/casper-helpers
++ '[' Debian == Ubuntu ']'
++ MP_QUIET=-q
++ '[' '!' -x /bin/fstype ']'
++ export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/lib/klibc/bin
++ PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/lib/klibc/bin
+ . /lib/lsb/init-functions
++ FANCYTTY=
++ '[' -e /etc/lsb-base-logging.sh ']'
++ true
+ MOUNTP=
+ COW=
+ DEV=
+ DEST=
+ TYPE=
+ DESKTOP_LINK=
+ Main -c/cow -d/dev/sde1 -text2
+ Parse_args -c/cow -d/dev/sde1 -text2
+ ARGS=-c/cow
++ getopt --longoptions cow:,device:,output,resync-string:,type:,help,usage,version --name=casper-snapshot --options c:d:o:t:r:,h,u,v --shell sh -- -c/cow
+ ARGUMENTS=' -c '\''/cow'\'' --'
+ '[' 0 '!=' 0 ']'
+ eval set -- ' -c '\''/cow'\'' --'
++ set -- -c /cow --
+ true
+ case "${1}" in
+ SNAP_COW=/cow
+ shift 2
+ true
+ case "${1}" in
+ shift
+ break
+ Defaults
+ MOUNTP=/mnt/casper-snapshot
+ COW=/cow
+ DEV=
+ DEST=/mnt/casper-snapshot/casper-sn.cpio.gz
+ TYPE=cpio
+ DESKTOP_LINK=/home/casper/Desktop/casper-snapshot
+ '[' -n '' ']'
+ DEF_COW=/cow
+ '[' -z /cow ']'
+ COW=/cow
+ case "${SNAP_TYPE}" in
+ TYPE=cpio
+ '[' '!' -d /cow ']'
+ Mount_device
+ dev=
+ '[' '!' -d /mnt/casper-snapshot ']'
+ '[' -z '' ']'
+ mount -t tmpfs -o rw tmpfs /mnt/casper-snapshot
+ '[' '!' -L /home/casper/Desktop/casper-snapshot ']'
+ Do_snapshot
+ case "${TYPE}" in
+ cd /cow
+ find . -path '*.wh.*' -prune -o -print0
+ cpio --quiet -o0 -H newc
+ gzip -9c

+ Clean
+ '[' -n '' ']'
live:/#