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Full Discussion: Checking multiple conditions in UNIX IF-ELSE
Top Forums Shell Programming and Scripting Checking multiple conditions in UNIX IF-ELSE Post 302811707 by kumarjt on Friday 24th of May 2013 03:22:29 AM
Old 05-24-2013
Checking multiple conditions in UNIX IF-ELSE
I am posting this info only after having confirmed the fact that there are no prior posts avialable that serves my purpose .

In my Korn Shell script file , there are two shell variables which needs to be tested within a single if statement .

Sample variables :
$var1 and $var2

The check should be :
if $var1 is NULL(empty in Unix) OR $var2 == "Y" ,
then
do logic 1
else
do logic 2
fi

The way I wrote the if-else block is ;
Code:
 
if [ -z $var1 -o  $var2 == "Y" ]; then
     do logic 1
else
    do logic 2
fi

The problems I am facing are :
1. Even if for cases where $var1 is empty , logic 2 is executed
2. The script runs but with an error message like "argument expected"

I tested the two conditions individually , and they executed as expected , but when they are commbined with and -o operator , they yield improper result.

Can please somoeone help me ?

Thanks
Kumarjit Ghosh.
 

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