Re: [Help-bash] The best way to derefrence a variable whose name is stored in another variable.

[Chris F.A. Johnson]

On Fri, 24 Apr 2015, Peng Yu wrote:

> Hi I use the following code to test if the variable name stored in "x"
> actually have any value set. But I am not sure if it is the best way
> to do.
>
> Does anybody know what is the best way to do so in bash?
>
> #!/usr/bin/env bash
>
> var=10
> x=var

[[ -n "${!x}" ]] && echo yes || echo no


--
Chris F.A. Johnson, <http://cfajohnson.com>