If you are a Linux enthusiast then this post will be of good help. Linux since is open source operating system it’s not an issue to get a copy of it and get it installed on your system . There are many Linux versions which you can download online.  But if you are the one who really don’t want mess up your system installing Linux but want to use then you can use Linux right from your browser. This is online version of Linux (no GUI) which you can work in the shell mode. Even though it does not give you a GUI but for Linux experts it’s more than enough what they can ask.

Check it out:  Online Linux.