Bootstrap FreeKB - Linux Commands - unset (undefine a variable)
Linux Commands - unset (undefine a variable)

Updated:   |  Linux Commands articles

Lets say you've created a variable that contain a value, like this.



When you echo $foo, bar is returned.

echo $foo


The unset command will undefine the variable. In this example, the foo variable will no longer be defined.

unset foo


Now, when you attempt to echo $foo, nothing is returned, since foo has been unset.

echo $foo


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