Shell Programming and Scripting

I need to awk a value out of a file and see if it exists in another file.
My if statement below returns a positive even if the value doesn't exist.
The kky3 is finding the correct field for the value.


cat $PRE | while read a
do
kky2=`echo $a | awk -F: '{print $2}'`
echo "kky2 " $kky2
kky3=`echo $kky2 | awk -F '{print $1}'`
echo "kky3 " $kky3
if [ /usr/bin/egrep "$kky1" $PST ] ; then
echo "found invoice"
else
echo "not found"
fi
done

From my (limited) understanding of your code, both kky1 nor PST get set outside the while loop but never ever changed inside of it ...!?

kky3=`echo $kky2 | awk -F '{print $1}'`
echo "kky3 " $kky3
if [ /usr/bin/egrep "$kky1" $PST ] ; then

I wrote a different version to do a more controlled test of my statements.

This is what I have.
My if statement finds the value Olive from test file one when it doesn't exist.
Perhaps if is not the way to do this?

> more testfile1
apple
orange
grapes
olive
> more testfile2
apple
grapes
orange

#!/bin/ksh
FL1=testfile1
FL2=testfile2
#
cat $FL1 | while read a
do
kky2=`echo $a | awk '{print $1}'`
echo "kky2 " $kky2
if [ '/usr/bin/egrep "$kky2" $FL2' ] ; then
echo "found fruit"
else
echo "fruit not found"
fi
done


kky2 apple
found fruit
kky2 orange
found fruit
kky2 grapes
found fruit
kky2 olive
found fruit

Code:

if [ '/usr/bin/egrep "$kky2" $FL2' ] ; then

this will always be true because it is just a single quoted string in a test bracket. A string is always true.

maybe try something like this:

Code:

/usr/bin/egrep "$kky2" $FL2 >/dev/null 2>&1 && echo found fruit || echo fruit not found

That works ! thanks!