Linux is an open-source operating system. You can use it as an alternative to Windows and Mac OSX. There are various distributions of Linux OS but the most popular ones are Ubuntu, Fedora, Red Hat, CentOS, SUSE, etc. Even, Android is also a Linux OS. The best thing about Linux is that it can be used everywhere from smartwatches to supercomputers. Majority of server runs on Linux O.S. so it is necessary for you to understand it thoroughly if you want to become a good system administrator. Following are the topics that are covered in Linux tutorial-
