#diskcloning

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Clone your drives to image files, browse, and restore with ease. Direct drive-to-drive copying and scheduled backups are built-in. Hot images even while drives are in use. Free and handy!

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It always wise for a System Administrator to be prepared for the worst situation & having a backup/clones of servers, when such a day arrives will certainly make your job & life easy. Though there are a number of options to choose from to create a clones of your HDdrives like Clonezilla, Redo backup, Mondo Rescue etc but here in this post, we will not discuss 3rd party tools but will use dd command & cat command to complete cloning disks in Linux. (Recommended Read: Commands to check System & Hardware Information) dd Command dd command is a good tool for cloning disks in Linux & is available on almost all Linux distributions. But beware a little mistake and you can end up destroying your partition, so be very sure to double-check before executing the command. So, the Syntax used to Clone a partition or whole drive is  $ dd if=/dev/sda1 of=/dev/sdb1  

 where, 'dd' is the command, 'If' is the input drive, from where files are to be cloned i.e./dev/sda1, 'Of' is the output drive to which files are cloned i.e./dev/sdb1. It's simple right but again I warn you to use the syntax properly as it can also delete your HDD. cat Command cat command has a number of functions i.e. it can be used to create files, you can use it to read files, or can also combine 2 files (read article HERE) but it can also be used to clone/backup a complete drive. Though dd is a great command which has a number of options, cat command fares better when it comes to speed & performance. Syntax for cat command :- $ cat /dev/sda1 > /dev/sdb1 where, cat is the command, /dev/sda1 is the input drive, and, /dev/sdb1 is the output drive.