10 basic things you should know about Shell

-  The shell is a unique and multi- faceted program.

 - The shell is a command interpreter and a programming language in built.

 - There are various types of shells.

- The commonly used shells are Bourne Shell (sh), C Shell (csh or tcsh) and Korn Shell

   (ksh).

- The first shell is Bourne Shell (sh).

- These shells have their own built in functions which allow for the creation of the shell

  scripts.

 - Through the shell, user interacts with the kernel.

- The prompt for the Bourne shell is $ or # for the root user and the prompt for the C

    shell is %.

- We can start shell and exit by using the CTRL+D.

- All shells use different syntax and provide different services.