# On Debian systems, the complete text of the GNU General Public License
# can be found in /usr/share/common-licenses/GPL-2 file.
-PROGRAM="`basename $0`"
+PROGRAM="$(basename $0)"
VERSION=0.0.1
# Source live conf
else
USERNAME=$(cat /etc/passwd | grep "999" | cut -f1 -d ':')
HOSTNAME=$(hostname)
- BUILD_SYSTEM="Debian"
fi
-export USERNAME USERFULLNAME HOSTNAME BUILD_SYSTEM
+export USERNAME USERFULLNAME HOSTNAME
# Source helper functions
helpers="/usr/share/initramfs-tools/scripts/live-helpers"
echo "Options:"
echo " -c, --cow: specifies the copy on write directory (default: /live/cow)."
echo " -d, --device: specifies the output snapshot device (default: none)."
- echo " -o, --output: specifies the output image file (default: $type dependent)."
+ echo " -o, --output: specifies the output image file (default: ${type} dependent)."
echo " -r, --resync-string: internally used to resync previous made snapshots."
echo " -t, --type: specifies the snapshot type between \"squashfs\", \"ext2\", \"ext3\" or \"cpio\".gz archive (default: cpio)"
echo -e "\nLook at live-snapshot(1) man page for more information."
;;
ext2|ext3)
- DU_DIM="`du -ks ${COW} | cut -f1`"
- REAL_DIM="`expr ${DU_DIM} + ${DU_DIM} / 20`" # Just 5% more to be sure, need something more sophistcated here...
+ DU_DIM="$(du -ks ${COW} | cut -f1)"
+ REAL_DIM="$(expr ${DU_DIM} + ${DU_DIM} / 20)" # Just 5% more to be sure, need something more sophistcated here...
genext2fs --size-in-blocks=${REAL_DIM} --reserved-blocks=0 --root="${COW}" "${DEST}" || exit 1
;;
Is_same_mount ()
{
- dir1="`Base_path $1`"
- dir2="`Base_path $2`"
+ dir1="$(Base_path ${1})"
+ dir2="$(Base_path ${2})"
if [ "${dir1}" = "${dir2}" ]
then
Parse_args ()
{
# Parse command line
- ARGS="$1"
- ARGUMENTS="`getopt --longoptions cow:,device:,output,resync-string:,type:,help,usage,version --name=${PROGRAM} --options c:d:o:t:r:,h,u,v --shell sh -- ${ARGS}`"
+ ARGS="${1}"
+ ARGUMENTS="$(getopt --longoptions cow:,device:,output,resync-string:,type:,help,usage,version --name=${PROGRAM} --options c:d:o:t:r:,h,u,v --shell sh -- ${ARGS})"
- if [ "$?" != "0" ]
+ if [ "${?}" != "0" ]
then
echo "Terminating." >&2
exit 1
while true
do
- case "$1" in
+ case "${1}" in
-c|--cow)
- SNAP_COW="$2"
+ SNAP_COW="${2}"
shift 2
;;
-d|--device)
- SNAP_DEV="$2"
+ SNAP_DEV="${2}"
shift 2
;;
-o|--output)
- SNAP_OUTPUT="$2"
+ SNAP_OUTPUT="${2}"
shift 2
;;
-t|--type)
- SNAP_TYPE="$2"
+ SNAP_TYPE="${2}"
shift 2
;;
-r|--resync-string)
- SNAP_RSTRING="$2"
+ SNAP_RSTRING="${2}"
break
;;
Mount_device ()
{
- dev="$1"
+ dev="${1}"
if [ ! -d "${MOUNTP}" ]
then
# create a temp
mount -t tmpfs -o rw tmpfs "${MOUNTP}"
- if [ ! -L /home/$USERNAME/Desktop/live-snapshot ]
+ if [ ! -L /home/${USERNAME}/Desktop/live-snapshot ]
then
- ln -s "${MOUNTP}" /home/$USERNAME/Desktop/live-snapshot
+ ln -s "${MOUNTP}" /home/${USERNAME}/Desktop/live-snapshot
fi
else
if [ -b "${dev}" ]
DEV=""
DEST="${MOUNTP}/live-sn.cpio.gz"
TYPE="cpio"
- DESKTOP_LINK=/home/$USERNAME/Desktop/live-snapshot
+ DESKTOP_LINK=/home/${USERNAME}/Desktop/live-snapshot
if [ -n "${SNAP_RSTRING}" ]
then
Usage "Error: ${COW} is not a directory"
fi
- Mount_device $DEV
+ Mount_device ${DEV}
}
Clean ()
{
- if [ -n "$DEV" ]
+ if [ -n "${DEV}" ]
then
umount "${MOUNTP}"
rmdir "${MOUNTP}"
Main ()
{
- Parse_args "$@"
+ Parse_args "${@}"
Defaults
Do_snapshot
Clean
}
-Main "$@"
+Main "${@}"