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Removing Null data in output

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# 1  
Old 08-13-2007
Removing Null data in output

Hello all,

I have a script that has an infile with system package information. For the most part the script is looking well. The only thing i need help is in testing for null entries and removing null data.


for i in `cat /mwncps/bin/eco_pack`


NAME=`pkginfo -l | grep $i | grep 'NAME' | awk '{ print $5 }'`
VER=`pkginfo | grep $i | grep version | awk 'BEGIN {OFS=" "}{gsub(/version:/,"") ;}{ print $7 }'`

echo "`hostname`,"$NAME","$VER""


The output now looks like this

hostname,package,version <-- this part of the output is correct
hostname,, <-- this will need to be removed completely

I welcome your feedback


# 2  
Old 08-13-2007
try something like this

while read i

  	NAME=`pkginfo -l | grep $i | grep 'NAME' | awk '{ print $5 }'`
  	VER=`pkginfo | grep $i | grep version | awk 'BEGIN {OFS=" "}{gsub(/version:/,"") ;}{ print $7 }'`
	if [[ -z $NAME ]]; then
	echo "`hostname`,"$NAME","$VER""

done < /mwncps/bin/eco_pack > outputfile

# 3  
Old 08-13-2007
I just incorporated this portion

if [[ -z $NAME ]]; then
and that did the trick.

Many thanks,


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