How to check for null or empty string


 
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# 1  
Old 07-19-2007
How to check for null or empty string

Hi,

I need to check for value not equal (<>) to 21 and not equal empty or null values.

Please modify this script

Code:
if [ $VALUE -ne "21" ]
then
    echo "$VALUE,$BSC_NAME,$BSC_ID" > $OUT_FILE/power_up.out
end if


TQ

Last edited by Yogesh Sawant; 10-19-2010 at 08:18 AM.. Reason: added code tags
# 2  
Old 07-19-2007
can anyone help?
# 3  
Old 07-19-2007
Please read our rules and refrain from bumping your posts.

Thanks,
ZB
# 4  
Old 07-20-2007
Quote:
Originally Posted by zazzybob
Please read our rules and refrain from bumping your posts.

Thanks,
ZB
Sorry. Anyway i found the solution. Thank you so much for the help.
# 5  
Old 07-20-2007
You shuld post the solution to help other forum members having same type of problems in coming future......

Cheers,

Awadhesh
Smilie
# 6  
Old 07-24-2007
Quote:
Originally Posted by doer
Hi,

I need to check for value not equal (<>) to 21 and not equal empty or null values.

Please modify this script

if [ $VALUE -ne "21" ]
then
echo "$VALUE,$BSC_NAME,$BSC_ID" > $OUT_FILE/power_up.out
end if


TQ

Here's the solution

Code:
if [ ! -n "$VALUE" ]
    then
   VALUE="21"
fi

Code:
if [ $VALUE -ne "21" ]
then
echo "$VALUE,$BSC_NAME,$BSC_ID" > $OUT_FILE/power_up.out
end if


Last edited by Yogesh Sawant; 10-19-2010 at 08:20 AM.. Reason: added code tags
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