Tech Tip: Dereference Variable Names Inside Bash Functions

Courtesy Linux Journal - The Original Magazine of the Linux Community  Fri, 01/15/2010 - 11:09

We often read (including in the book Advanced Bash-Scripting Guide by Mendel Cooper) that if we pass variable names as parameters to functions, they will be treated as string literals and cannot be dereferenced (ie the value is not available).

But this is not so, variable names can be passed as parameters to functions and they can be dereferenced to obtain the value of the variable with the given name.

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