Features of linux

Linux has a lot of features. Some of them are listing below

1) Open Source
2) Multi user and Multitasking
3) Enhanced Security (Inbuilt firewalls)
4) Reliability
5) GUI
6) Open booting
7) stable OS
8) Multiple user
9) Cost free operating System
9) Biggest servers on this earth are running on linux without restarting from last twelve years