a regular expression? probably for awk.. Güzin Ulutaş wrote: > /^s *- Nl AGT.*-Is (\d{1,3})\.\d{1,3} -Id (\d{1,3})\.\d{1,3}.*-It > cbr.*-Ii (\d{1,6})/ > > Hi all, is there anybody know what it does? Is it a sed command ? > >