Date: Wed, 14 Aug 2002 09:47:29 -0500 From: Dan Nelson <dnelson@allantgroup.com> To: Tillman Hodgson <tillman@seekingfire.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Extracting the 1-minute loadavg in a portable yet low-impact fashion Message-ID: <20020814144729.GA50066@dan.emsphone.com> In-Reply-To: <20020814083253.C11913@seekingfire.com> References: <20020814083253.C11913@seekingfire.com>
next in thread | previous in thread | raw e-mail | index | archive | help
In the last episode (Aug 14), Tillman Hodgson said:
> I'm trying to extract the 1-minute loadavg in a portable (between
> RedHat Linux and FreeBSD, at least) way without having to invoke a
> lot of expensive subprocesses. On Linux, awk '{print \$1}' <
> /proc/loadavg has been working nicely (though non-portably). When I
> log onto a BSD host and my NFS-mounted home dir follows me, this
> obviously doesn't work very well :-)
>
> uptime | awk '{print $10}' works, but leaves a trailing comma. Adding
> a sed statement to the end of that would start to get too expensive.
That actually won't work, since if the system has been up for under an
hour, you get
9:43AM up 28 mins, 6 users, load averages: 0.28, 0.67, 0.43
How about uptime | sed -e 's/.*: \([0-9.]*\).*/\1/' ? That should work
on any system where the loadavg is immediately preceded by ": ", which
is every OS I can lay my hands on at the moment.
--
Dan Nelson
dnelson@allantgroup.com
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20020814144729.GA50066>