Hello,
I have a simple script such as

-----------------------------
#! /bin/sh


YEAR=`date -u +%Y`;
MONTH=`date -u +%m`;
DAY=`date -u +%d`;
DATE=$MONTH$DAY$YEAR
LOGFILES=auditTrail-$DATE
LOGMATCH=$LOGFILES\*
ARGUM=''

# find all files and write them to a file
find . -name "$LOGMATCH" > temp


cat ./temp | while read file_line
do
ARGUM=$file_line' '$ARGUM
echo $ARGUM
done

echo "final string contains"
echo $ARGUM
echo "nothing"

----------------------------

I was hoping that it will read a line one at the time and add to the variable ARGUM. It does exactly that within the loop. Yet, when it gets out the loop, last line
echo $ARGUM
return nothing

output looks like this
./log/auditTrail-02022007.10.out
./log/auditTrail-02022007.14.out ./log/auditTrail-02022007.10.out
./log/auditTrail-02022007.7.out ./log/auditTrail-02022007.14.out ./log/auditTrail-02022007.10.out
./log/auditTrail-02022007.1.out ./log/auditTrail-02022007.7.out ./log/auditTrail-02022007.14.out ./log/auditTrail-02022007.10.out
final string contains

nothing


-----------------------
I thought that variable ARGUM is global everywhere in the script.
What am I missing?

Thank you in advance