Clear Linux / UNIX BASH Shell Command Line Cache / History

Posted on in Categories , , , , , , , last updated January 31, 2008

Q. I just noticed faq about clearing dns cache and there are lots of commands stored in my cache. Can you tell me the command to clear out my command history or cache from a shell prompt?
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Understanding command line shell

Posted on in Categories , , , , , , , , , last updated October 26, 2007

Q. I’ve migrated from Windows NT to Linux workstation. Most documents refer to a command line shell. Can you explain me command line shell?

A. A shell allows you to type the commands such as date or clear. There are many shell available. BASH (bourne again shell) is default shell for most Linux distributions.

It also known as a command interpreter which takes command from user and pass the same to kernel for execution. Bash shell supports aliases, filename completion, command history, POSIX compatibility and many other features.

Other UNIX / Linux shell

  • csh / tcsh
  • sh / ksh