Date: Wed, 13 Aug 2003 22:13:22 +0100 From: Ceri Davies <setantae@submonkey.net> To: G.Czaplinski@prioris.mini.pw.edu.pl Cc: freebsd-bugs@FreeBSD.org Subject: Re: misc/55411: One of the freebsd-tips in fortune(1) is incorrect on time(1) command. Message-ID: <20030813211322.GC39980@submonkey.net> In-Reply-To: <20030813204708.GO13622@prioris.mini.pw.edu.pl> References: <200308132029.h7DKTrmN051522@freefall.freebsd.org> <20030813204708.GO13622@prioris.mini.pw.edu.pl>
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On Wed, Aug 13, 2003 at 10:47:09PM +0200, Grzegorz Czaplinski wrote:
> On Wed, Aug 13, 2003 at 01:29:53PM -0700, Ceri Davies wrote:
> > Synopsis: One of the freebsd-tips in fortune(1) is incorrect on time(1)=
command.
> >=20
> > State-Changed-From-To: open->closed
> > State-Changed-By: ceri
> > State-Changed-When: Wed Aug 13 13:28:53 PDT 2003
> > State-Changed-Why:=20
> > The fortune is fine.
> > If it mentioned the -h switch then I'd agree, but it doesn't.
> >=20
> >=20
> > Responsible-Changed-From-To: freebsd-ports-bugs->freebsd-bugs
> > Responsible-Changed-By: ceri
> > Responsible-Changed-When: Wed Aug 13 13:28:53 PDT 2003
> > Responsible-Changed-Why:=20
> > Not a ports bug.
> >=20
>=20
> Hi there,
>=20
> STOP!
>=20
> I see you don't get the whole point. This is not the only one error in
> fortune tips given by Dru*.
I don't think it's an error.
The tip says:
"To see how long it takes a command to run, type the word "time" before
the command name."
That doesn't have anything to do with what you've mentioned below, or the -h
option, which is what your PR was about. If that's not what your PR was ab=
out,
then you should have said so, in the PR.
> Consider that:
> 1.
> alphax# time ping -c prioris.mini.pw.edu.pl
> ping: invalid count of packets to transmit: `prioris.mini.pw.edu.pl'
> 0.000u 0.004s 0:00.04 0.0% 0+0k 1+0io 6pf+0w
> alphax# time ping -c 2 prioris.mini.pw.edu.pl
> PING prioris.mini.pw.edu.pl (194.29.178.2): 56 data bytes
> 64 bytes from 194.29.178.2: icmp_seq=3D0 ttl=3D68 time=3D0.874 ms
> 64 bytes from 194.29.178.2: icmp_seq=3D1 ttl=3D68 time=3D0.602 ms
>=20
> --- prioris.mini.pw.edu.pl ping statistics ---
> 2 packets transmitted, 2 packets received, 0% packet loss
> round-trip min/avg/max/stddev =3D 0.602/0.738/0.874/0.136 ms
> 0.000u 0.008s 0:01.06 0.0% 0+0k 0+0io 4pf+0w
I see times here. It tells me how many page faults there were too.
> 2.
> alphax# \time ping -c 2 prioris.mini.pw.edu.pl
> PING prioris.mini.pw.edu.pl (194.29.178.2): 56 data bytes
> 64 bytes from 194.29.178.2: icmp_seq=3D0 ttl=3D68 time=3D0.675 ms
> 64 bytes from 194.29.178.2: icmp_seq=3D1 ttl=3D68 time=3D0.630 ms
>=20
> --- prioris.mini.pw.edu.pl ping statistics ---
> 2 packets transmitted, 2 packets received, 0% packet loss
> round-trip min/avg/max/stddev =3D 0.630/0.653/0.675/0.022 ms
> 1.02 real 0.00 user 0.00 sys
I see times here.
> 3.
> alphax# \time -h ping -c 2 prioris.mini.pw.edu.pl
> PING prioris.mini.pw.edu.pl (194.29.178.2): 56 data bytes
> 64 bytes from 194.29.178.2: icmp_seq=3D0 ttl=3D68 time=3D0.683 ms
> 64 bytes from 194.29.178.2: icmp_seq=3D1 ttl=3D68 time=3D0.507 ms
>=20
> --- prioris.mini.pw.edu.pl ping statistics ---
> 2 packets transmitted, 2 packets received, 0% packet loss
> round-trip min/avg/max/stddev =3D 0.507/0.595/0.683/0.088 ms
> 1.01s real 0.00s user 0.00s sys
I see times here.
> These examples are from:
> alphax# uname -a
> FreeBSD alphax.mini.pw.edu.pl 5.1-RELEASE FreeBSD 5.1-RELEASE #1: Mon
> Jun 16 20:46:55 CEST 2003 root@alphax.mini.pw.edu.pl:/usr/obj/usr/src=
/sys/
>=20
> The shell is csh. From zsh it looks much different:
>=20
> alphax# time ping -c 2 prioris.mini.pw.edu.pl
> PING prioris.mini.pw.edu.pl (194.29.178.2): 56 data bytes
> 64 bytes from 194.29.178.2: icmp_seq=3D0 ttl=3D68 time=3D0.666 ms
> 64 bytes from 194.29.178.2: icmp_seq=3D1 ttl=3D68 time=3D0.642 ms
>=20
> --- prioris.mini.pw.edu.pl ping statistics ---
> 2 packets transmitted, 2 packets received, 0% packet loss
> round-trip min/avg/max/stddev =3D 0.642/0.654/0.666/0.012 ms
> ping -c 2 prioris.mini.pw.edu.pl 0.00s user 0.01s system 0% cpu 1.012
> total
OK, so zsh's builtin time looks doesn't prefix it's output with a newline.
Your PR didn't say that either.
> If someone has csh as his/her default shell the output is totally
> unreadable. This is because you call shells builtin. Prefixing time
> command with a "\" you prevent such errors as then you call time(1).
That's a matter of opinion. It does tell you how long the command took
to execute.
> I guess you did not perform any tests before closing the PR.
You guessed incorrectly.
Ceri
--=20
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