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Clonezilla is an open source disk imaging, cloning and backup software. It supports ext2, ext3, ext4, reiserfs, xfs, jfs of GNU/Linux, FAT, NTFS of MS Windows, and HFS+ of Mac OS. You can use it to clone single or multiple machines. It is more feature-rich than commercial Norton Ghost. In this video tutorial, I will [...]

Grub stands for GRand Unified Bootloader. When a PC starts, processor executes code stored in flash memory on the motherboard commonly known as BIOS (Basic Input Output System). Bios performs power-on self test (POST) which checks hardware. It then finds the device from which to boot the PC and loads its first sector into memory. [...]

If you are desperate because you have forgotten root password, don’t be. This tutorial will show you how to reset root.

Some of the time, we are in need to do some quick calculations while on console or terminal. Here what bc, a command line calculator, comes in handy.

We sys admins are sometimes in situations where we have ssh connection to a server but want to do some other tasks on local computer, for example, copying a file to remote system without breaking the ssh connection. We can, of course, open a new terminal window and do the other task and then [...]