--
$ grep -v X.Y. File1.txt | grep -o ".*_[0-9]" | grep -F -f - File2.txt
>>File1.txt
--Be careful with writing to the same file that you're reading from using redirection. In general, it should be avoided. Use a temporary file instead. Cheers, TAA ----------------------------------------------------- Tony Abou-Assaleh Email: [EMAIL PROTECTED] Web site: http://tony.abou-assaleh.net ----------------------[THE END]----------------------
