Shell Programming and Scripting

cat /tmp/trueclients.lst | while read CLIENT
cat /tmp/dates.lst | while read DATES
while read CLIENT
    do while read DATES
        do /usr/openv/netbackup/bin/admincmd/bpimagelist -L -client $CLIENT -d $DATES -e $DATES |  egrep -i '^ ID:' | awk '{print $NF}'
        done
    done

while read CLIENT
do
    while read DATES
    do
        /usr/openv/netbackup/bin/admincmd/bpimagelist -L -client $CLIENT -d $DATES -e $DATES | egrep -i '^ ID:' | awk '{print $NF}'
    done < /tmp/dates.lst
done < /tmp/trueclients.lst

$ cat /tmp/dates
date1
date2

$ cat /tmp/clients
client1
client2

$ cat temp.sh
while read CLIENT; do
  echo $CLIENT
  while read DATE; do
    echo $DATE
  done < /tmp/dates
done < /tmp/clients

$ ./temp.sh
client1
date1
date2
client2
date1
date2