[aklug] Re: bash die

I'd be careful with those challenges.. Arthur once wrote an init
system completely in Awk; I think it was mostly for the 'Awkward init'
pun.

James Gibson

On 9/15/10, Christopher Howard <choward@indicium.us> wrote:
> On 09/15/2010 01:19 PM, Arthur Corliss wrote:
>> On Wed, 15 Sep 2010, Christopher Howard wrote:
>>
>>> Say you have a bash script where if any command fails, the scripts
>>> should stop. What would be the sensible way to deal with that?
>>>
>>> I was thinking, write some kind of die function, and then for each
>>> command:
>>>
>>> command_1 || die("command_1 failed")
>>> mount /this/file || die("failed to mount important filesystem")
>>> ...
>>>
>>> Or is there some better way to do this?
>>
>> Don't use bash, use make. That's exactly what it was designed to do.
>>
>> --Arthur Corliss
>> Live Free or Die
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>
> I was of the understand that make doesn't preserve variable assignments
> across commands, which means you couldn't do something like this:
>
> VAR=`ls`
> echo $VAR
>
> If I'm wrong, write me a Makefile that proves it.
>
> And how do you write functions in a Makefile?
>
> --
> Christopher Howard
> http://frigidcode.com
> http://theologia.indicium.us
>
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