Top 60 Linux Interview Questions & Answers . Details Last Updated: 30 April 2020 . 1) What is Linux? Linux is an operating system based on UNIX and was first introduced by Linus Torvalds. It is based on the Linux Kernel and can run on different hardware platforms manufactured by Intel, MIPS, HP, IBM, SPARC, and Motorola. Another popular element in Linux is its mascot, a penguin figure named ...