Re: How to expand variables from string?

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#12

From: FrenKy
Date: Sun, 28 Oct 2007 21:38

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FrenKy wrote:
> CrispieCritter@gmail.com wrote:
>> On Oct 17, 1:24 pm, Olivier Langlois <olangl...@sympatico.ca> wrote:
>>> Hi,
>>>
>>> First, sorry if I am cross-posting this question. I am not sure to
>>> understand the difference between the 2 newsgroups.
>>>
>>> My problem is that I have a shell variable containing a string
>>> composed of variable names preceded with the expension operator ('$')
>>> and I am fighting with the shell to find a way to make the expension.
>>> Here is an example:
>>>
>>> var1='$HOME'
>>> echo $var1
>>>
>>> will display $HOME but I would like to find a construction that would
>>> allow me to print the $HOME value from the var1 variable.
>>>
>>> Thank you for your assistance,
>>> Olivier 
>>> Langloishttp://www.olivierlanglois.nethttp://blog.olivierlanglois.net
>>
>> Don't enclose the variable with quotes. For example:
>>
>> HOME="Some Random Text"
>> TEST=$HOME
>> echo $TEST
>>
>> This would then print the text "Some Random Text" without quotes which
>> is what you want ?
>>
>> Glenn
>>
> This solution has one problem:
>  HOME="Some Random Text"
>  TEST=$HOME
>  HOME="Some Random Text"
>  echo $TEST
> 
> I'd use Ralf's suggestion.

   HOME="Some Random Text"
   TEST=$HOME
   HOME="Other Random Text"
   echo $TEST

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From: FrenKy <frenky@foo.com>
Newsgroups: alt.comp.lang.shell.unix.bourne-bash,gnu.bash
Subject: Re: How to expand variables from string?
Date: Sun, 28 Oct 2007 22:38:05 +0100
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