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To:Speakup is a screen review system for Linux. From:Kerry Hoath Subject:Re: ot, bash programming question Date:Thu, 29 Mar 2012 15:05:55 +0800
 

You probably need something like
command you want to test
if [$? eq 0] then ... fi

Sorry i'm not good at shell scripting but $? holds the exit status and
eq 0 tests if it is equal to 0.
You can also do command &&command 2 && command 3
to run command 2 if command 1 succeeds, then command 3 if command 2
succeeds.

command ||other command
will run command and if it fails run other command

Regards, Kerry.
On 29/03/2012 2:45 PM, Gregory Nowak wrote:
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>
> Hi folks,
>
> apologies for the off topic post, but I'm hoping someone can answer my
> question.
>
> In a bash script, how do you deal with a program returning 0 in an if
> statement?
> Here's a script to illustrate what I mean
>
> #!/bin/sh
> if [ `/bin/true || echo $?` = 1 ] ; then
> echo "returned 1"
> fi
>
> When I run this, I should just get the bash prompt back. When I run it
> though, I get:
>
> [: 4: =: unexpected operator
>
> followed by the prompt.
> I understand this happens because true exits with 0 status, and it
> isn't echoed back, so the if statement compares nothing to 1. What I'd
> like to know is how to get around that? Thanks in advance.
>
> Greg
>
>
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