script for scanning two files

[bhandu]

I have developed a shell script which will scan two files and then put the similar records in a third file.The script is follows


rm $filename3
touch $filename3

exec < $filename1

while read line
do
exec <filename2
while read line1
do
if [ $line -eq $line1 ]
echo $line >> filename3
end if
done
done

But the above shell script is not working.
Could anyone help me out?

[Cabhan]

You use 'fi' to end an if block, not 'end if'.

Also note that you are going to read the first line of file1, and then all of file2 and print out all matching lines. Then you're going to read the second line of file1 and all of file2 and print all matching lines. You want to read through both files together.