Shell Scripting

Internal Commands and Builtins in Shell Environment

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Internal Commands and Builtins in Shell Environment


                          A builtin is a command contained within the Bash tool set, literally built in. This is either for performance reasons -- builtins execute faster than external commands, which usually require forking off a separate process -- or because a particular builtin needs direct access to the shell internals.
 

Using expr

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Using expr



Example of expr function usage
Read more... [Using expr]
 

Command Substitution in Shell scripting

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Command Substitution in Shell scripting



Command substitution reassigns the output of a command [1] or even multiple commands; it literally plugs the command output into another context.
Read more... [Command Substitution in Shell scripting]
 

Special Variable Types in Shell

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Special Variable Types in Shell



Some of the Special variable types in Shell programming
Read more... [Special Variable Types in Shell]
 

Variable Assignment in Shell Scripting

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Variable Assignment in Shell Scripting



How assignment Operator works in Shell scripting?
Read more... [Variable Assignment in Shell Scripting]
 
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