hi all,

i have a problem with this script, the variable MacAdd isn't usable outside the internal while !

Please help me

Thanks

#!/usr/bin/bash
cat source.txt | while read LineS; do
tokenS=`echo $LineS |awk '{ print $1 }'`
MacAdd=""
cat FileDb.txt | while read LineDb; do
tokenDb=`echo $LineDb |awk '{ print $1 }'`
# echo $tokenS " " $tokenDb
if [ "$tokenS" != "$tokenDb" ]
then
MacAdd=$tokenS
# echo "not equal"
else
MacAdd=""
# echo "string equal"
fi
done
if [ "$MacAdd" == "" ]
then
echo "string empty"
else
echo "mac address " $MacAdd
fi
done

Could you put the shell script inside [code][/code] tags?

Take the first declaration of the variable MacADD out of the first while loop, and place it one line before the cat statement. That should make it global to the entire script. I'm not certain, but declaring it in a loop may limit the scope of the variable.

hi all

I've resolved the script problem modify it

#!/usr/bin/bash
cat source.txt |
while read LineS; do
tokenS=`echo $LineS |awk '{ print $1 }'`
#echo "sorg "$tokenS
MacAdd=`cat FileDb.txt | grep $tokenS | awk '{ print $1 }'`
#echo "DB "$MacAdd
if [ "$MacAdd" == "" ]
then
echo "MacAddress "$tokenS
fi
done
exit


Thanks