"Egor Tur" <[EMAIL PROTECTED]> writes: > Hi. > Who can explain? > ps ax | grep lpd > 398 ? S 0:00 lpd Waiting > 5593 pts/13 S 0:00 grep lpd > ps ax | grep [l]pd > 398 ? S 0:00 lpd Waiting > > What do [l]?
As far as grep is concerned, [l] is a regular expression that matches any single character that is a lowercase l. lp[rd] would match either lpr or lpd. The important effect here is that lpd and [l]pd both match 'lpd', but neither matches '[l]pd', so the grep process itself isn't included in the ps listing. -- David Maze [EMAIL PROTECTED] http://people.debian.org/~dmaze/ "Theoretical politics is interesting. Politicking should be illegal." -- Abra Mitchell -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
