What is a Linux
Linux is an operation system that is modeled on UNIX operating system and us advanced version if UNIX.
Linux was originally developed by Linus Tor V at the university of Helsinki. It was initially developed for Intel 80386 processor based IBM compatible personal computers.
Linux is an open source product and it source code is easily available.
It is a multi user system which means that more then one user can word at the same computer system at a the same time.
It also multi-tasking that manes more then one program can be made to run at the same time