shell Getting started with shell Installation or Setup

Example

A command shell is a command line interface computer program to an operating system.

Some Variants

1. Bash : Comes as default shell on ubuntu

2. KornShell(ksh) :

To install ksh in Ubuntu

   $ sudo apt-get install ksh

To start working with ksh

    $ ksh
    $ ps $$
      PID TTY      STAT   TIME COMMAND
      4187 pts/2    S      0:00 ksh

Enter the commands at the ksh prompt

3. csh :

To install csh in Ubuntu

    $ sudo apt-get install csh

To work with csh, go to the command line and enter csh

    $ csh
    %