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Old 07-27-2012, 02:44 AM   #1
thomas2004ch
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[Script] How to catch the output of a command to a variable?


Hi,

In my BASH-script I want to catch the output of whoami to a variable. How to do that?

Thomas
 
Old 07-27-2012, 02:52 AM   #2
druuna
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Code:
variable="$(whoami)"
The $( ... ) part is what you are looking for. It executes the command (whoami in this case) in a sub-shell. Output is stored in variable.
 
Old 07-27-2012, 02:57 AM   #3
thomas2004ch
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Quote:
Originally Posted by druuna View Post
Code:
variable="$(whoami)"
The $( ... ) part is what you are looking for. It executes the command (whoami in this case) in a sub-shell. Output is stored in variable.
Hi,

At the moment you answer my question I also found another solution:

Code:
user=`whoami`
Which one is better?
 
Old 07-27-2012, 03:01 AM   #4
druuna
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People used to use `<command>`, nowadays $(<command>) is preferred.

Have a look here: http://mywiki.wooledge.org/BashFAQ/082
 
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Old 07-27-2012, 11:47 AM   #5
David the H.
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bash already has a preset $USER variable with the current user's name in it, by the way.

The bash man page section for "Shell Variables" lists several others that store commonly used environment parameters.
 
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Old 07-30-2012, 12:56 AM   #6
thomas2004ch
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Quote:
Originally Posted by David the H. View Post
bash already has a preset $USER variable with the current user's name in it, by the way.

The bash man page section for "Shell Variables" lists several others that store commonly used environment parameters.
This is even a better way.
 
  


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