Retrieve the result of command in a variable

For specific reason, it is necessary to retrieve the result of a command (or back code) in variable to exploit the script later.

Below are different examples:

Syntax

var = $ (command)   

Note: Please note that the old method using reverse quotes ('command') is however forbidden and the examples presented here are better.


Examples

• Recovery of standard out
  • stdout only
    • var=$(command)
  • stdout and stderr
    • var=$(command 2>&1)
• Recovery back code ($?)
  • back code only
    • command
    • var=$?
  • Both
    • var=$ (command)
    • var=$?

See also

Knowledge communities.

• Forum
• Windows forum
• Programming forum
• Pen drive forum

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