Date: Fri, 6 Mar 1998 01:48:27 +0000 From: Nik Clayton <nik@nothing-going-on.demon.co.uk> To: Benjamin Lewis <bhlewis@gte.net>, Peter van Heusden <pvh@leftside.wcape.school.za> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Detecting state of PPP Message-ID: <19980306014827.13887@nothing-going-on.org> In-Reply-To: <199803060014.TAA13234@gte.net>; from Benjamin Lewis on Thu, Mar 05, 1998 at 07:14:00PM -0500 References: <Pine.BSF.3.95.980305071307.15655F-100000@leftside.wcape.school.za> <199803060014.TAA13234@gte.net>
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On Thu, Mar 05, 1998 at 07:14:00PM -0500, Benjamin Lewis wrote:
> pvh@leftside.wcape.school.za wrote:
>
> > How does one go about writing a program to check if a PPP link is up
> > or down?
>
> I've seen lots of complicated responses to this, so there is probably
> something inherintly wrong with what I've always done, check for the
> existence of the /var/spool/lock/LCK..cuaa? file. If there is a possibility
> that something else is using the serial line, one could check whether the
> PID in the file matches the PPP process.
If you're running a recent(ish) version you've probably got the pppctl
program. Here's my ppp-state file (stored in /usr/local/bin)
#!/bin/sh
#
# Report on the state of the PPP link
pppctl -v /var/run/ppp quit | grep ^PPP > /dev/null
if [ $? -eq 0 ]; then
echo Up
else
echo Down
fi
N
--
Work: nik@iii.co.uk | FreeBSD + Perl + Apache
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