ot, bash programming question

[Storm Dragon]

Hi,
You are getting the error because you are using the wrong test for your
variable. When doing math based comparisons you need to use switches
like -ne for noot equals. Here are a few and what they mean:
-ne not equals !=
-eq equals ==
-gt greater than >
-lt less than <
So here is your code with a couple modifications that will hopefully
make it easier to understand:
#!/bin/bash

> #execute program
> ./program.sh
> #if program exited abormally will return a 1, usually  returns 0 if completed successfully
> if [ $? -eq 1 ] ; then
> echo "returned 1"
> fi
> 
> HTH
> Storm
> 


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On Wed, 2012-03-28 at 23:45 -0700, 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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