backup-xz

#!/bin/bash
## Created by Georgi Patsev
## https://github.com/BaiGeorgi/backup-scripts
## Please read GPLv3! https://www.gnu.org/licenses/gpl-3.0.html
display_usage() { 
	echo "Run the script with two parameters /dev/[input] and output" 
	echo -e "Example:"
	echo -e "./backup-xz /dev/sda backup"
	echo -e "will create file backup.img.xz"
}
	if [  $# -le 1 ] # if less than two arguments supplied, display usage
	 then 
	 display_usage
	 exit 1
	fi
	if [[ ( $# == "--help") ||  $# == "-h" ]] # check whether user had supplied -h or --help . If yes display usage
	 then 
	 display_usage
	 exit 0
	fi
DISK="$1"
FILE="$2"
##dd if="$DISK" bs=4M | xz -q9e > "$FILE".img.xz ## Quiet mode.
dd if="$DISK" bs=4M | xz -vv9e > "$FILE".img.xz ## You can see the input and the output size, drink some cofee and return later.