xdd.sh

#! /bin/bash
# Clone, backup, or restore disks or partition using dd:
# $1=option, $2=source, and $3=destination

declare HELP

HELP="xdd.sh [-c] <source block device | partition> <destination block device | partition>\n
xdd.sh [-b] <source block device | partition> <destination path>\n
xdd.sh [-r] <source path> <destination block device | partition>\n
Warning: If destination is a partition, destination device must contain that\n
partition.\n

SYNOPOSIS: Clone, backup and restore partitions and whole\n
block devices. When cloning, the source and destination block devices do\n
not need paths, since it is assumed they are listed under /dev. Therefore, sda\n
expands to /dev/sda. However, a full path is required when listing the\n
destination with the -b option or the source with the -r option, as these are\n
archived files.\n
-------------\n
Examples:\n
xdd.sh -c sda sdb: clone drive /dev/sda to drive dev/sdb\n
xdd.sh -b sda /some/path/backup: creates backup.tar.gz at /some/path\n
xdd.sh -c /some/path/backup.tar.gz sda: restores image in backup.tar.gz to sda\n"

read -p  "WARNING: incorrect use of $@ may cause DATA LOSS.
Proceed with caution.
Press Enter to continue or Ctl-C to cancel."

if [[ $1=="-h" ]]; then
    # Print help
    echo -e $HELP
elif [[ $1=="-b" ]]; then
    # Backup disk or partition
    sudo dd if=/dev/"$2" bs=64K conv=noerror,sync | gzip -c > "$3".img.gz
elif [[ $1=="-c" ]]; then
    # Clone disk or partition
    sudo dd if=/dev/"$2" of=/dev/"$3" bs=64K conv=noerror,sync status=progress
elif [[ $1=="-r" ]]; then
    # Restore disk or partition
    sudo gunzip -c "$2" | dd of=/dev/"$3"
else
    echo -e $HELP
fi

exit 0