it would be interesting to see if cat LOGFILE | cut -d' ' -f14 | sort -u is faster than ruby version (-; --Vardhan On Tue, Oct 22, 2002 at 06:50:08PM +0900, Korshunov Ilya wrote: > What i have - Proftpd log file in the following format - > Thu Jul 25 00:54:24 2002 9 host 548053 /path/to/file b _ o r login_name ftp 0 > * c > > I want to get all login_name's from this file, but it mut be unique... > > > > -- > WBR > Korshunov Ilya