On Wed, Jan 7, 2009 at 7:48 AM, Ulrich Spoerlein <uspoerl...@gmail.com>wrote:
> On Wed, 07.01.2009 at 08:54:41 -0600, Sean C. Farley wrote: > > On Wed, 7 Jan 2009, Ulrich Spoerlein wrote: > > > > > On Tue, 06.01.2009 at 11:52:39 -0800, Sheldon Givens wrote: > > >> Hello everyone, > > >> > > >> It occurs to me that FreeBSD ps lacks the ability to disable header. > > >> This seems like a really obvious feature, and I may have simply > > >> missed it's existence (despite my relentlessly searching the man > > >> page) but here is a small patch that sets the flag 'n' to disable > > >> header output. > > > > > > You've missed it, probably because it is non-obvious: > > > > > > % ps -p 1 -o pid,cpu > > > PID CPU > > > 1 0 > > > % ps -p 1 -o pid= -o cpu= > > > 1 0 > > > % > > > > Another way: > > ps | tail +2 > > I'm not sure about the portability of tail +N, I seem to remember that > AIX doesn't support it. Therefore I'd rather use > > % ps | sed 1d > > which is way more portable. > > Cheers, > Ulrich Spoerlein > -- > It is better to remain silent and be thought a fool, > than to speak, and remove all doubt. > Hello everybody, Ulrich: I appreciate your solution, but it ends up being a pretty ridiculous command when you start desiring 6 or 7 fields. Sean: Ulrich is right in saying that tail +val is unreliable when coding for portability. And I guess I just feel like running a second command to do what should be possible to do with the first command (and is, on many platforms. ps --no-headers on linux for example) is a problem and presents opportunity for continued refinement of the utility. Sheldon _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
