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What is shell? List activity of the shell and types of shell

Posted By: David Evans     Category: Unix / Linux / Ubuntu     Views: 3077

What is shell? List activity of the shell and types of shell.

What is Shell

Sh is the interface between the user and the unix system.
It executes the command for the user.
Itself is the program.
It is the command interpreter.
It is the most important process which gives an environment to work with the system.

Activity of the shell

it issues the prompt and then wait for the command to enter.
it then scan the command for the metacharacter that is entered and then expands the abbrevations.
it then passes the command to get operated by the OS.
it wil wait til it is completed.
it display the result and continue the work.

Types of shell

  • Bourne shell(/bin/sh)
    • Korn shell(/bin/ksh)
    • Bash shell(/bin/bash)
  • C Shell (/bin/csh)
    • Tcsh (/bin/tcsh)
  
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David Evans
David Evans author of What is shell? List activity of the shell and types of shell is from London, United Kingdom.
 
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