Date: Thu, 30 Aug 2007 08:16:48 +1200 From: Hinkie <Hinkie@paradise.net.nz> To: Eric Crist <mnslinky@gmail.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: FreeBSD Cron Job to run (ifconfig em0 down; ifconfig em0 up) Message-ID: <01db01c7ea79$87b1d730$1e00a8c0@cheqsoft.local> References: <01a901c7ea3d$0ad62720$1e00a8c0@cheqsoft.local> <FD866B42-B6DA-4AC1-A4B0-EC858835CEBE@gmail.com> <01cd01c7ea71$2aa3cb50$1e00a8c0@cheqsoft.local> <35135D25-B5FC-410E-BBAF-DADE4F24085B@gmail.com>
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Eric
You are of course correct, it runs under "sh"
I think that means I have to run it in a separate script file
I write it as (First_Hop subs with a.b.c.1)
#!/bin/sh
if ! ping -c1 First_Hop >/dev/null 2>/dev/null
then
echo First_Hop_OK
else
ifconfig em0 down && ifconfig em0 up
echo Restored
fi
Save as /etc/pinger.sh
Try run:
pfsense-p266ii:~# /etc/pinger.sh
/etc/pinger.sh: Permission denied.
Try fix:
pfsense-p266ii:~# chmod 777 /etc/pinger.sh
chmod: /etc/pinger.sh: Read-only file system
Hmmmm I assume if it won't run here then crontab won't run it either?
Kind regards
David Hingston
----- Original Message -----
From: "Eric Crist" <mnslinky@gmail.com>
To: "Hinkie" <Hinkie@paradise.net.nz>
Cc: <freebsd-questions@FreeBSD.ORG>
Sent: Thursday, August 30, 2007 7:30 AM
Subject: Re: FreeBSD Cron Job to run (ifconfig em0 down; ifconfig em0 up)
David,
The script I provided assumes the sh shell. Most shell scripts have
been historically written for the bourne shell. Before running the
script I sent you, try typing sh<enter> at the command line. Then,
run the line I sent your way.
Let me know how it works for you!
Eric
On Aug 29, 2007, at 2:16 PMAug 29, 2007, Hinkie wrote:
> Hi Eric
>
> Thank you for that, I think I see one thing I was doing wrong
> (putting the ping into the if!)
>
> Running your code in the command window I get (Following the
> successful ping)
>
> TESTV=0: Command not found.
> TESTV: Undefined variable.
>
> As you can tell I am learning this syntax!
>
> Can you help me further?
>
> With thanks
>
> David Hingston
>
> ----- Original Message -----
> From: "Eric Crist" <mnslinky@gmail.com>
> To: "Hinkie" <Hinkie@paradise.net.nz>
> Cc: <freebsd-questions@FreeBSD.ORG>
> Sent: Thursday, August 30, 2007 2:17 AM
> Subject: Re: FreeBSD Cron Job to run (ifconfig em0 down; ifconfig
> em0 up)
>
>
> On Aug 29, 2007, at 8:03 AMAug 29, 2007, Hinkie wrote:
>
>> Hi
>>
>> I want to run a cron job in /etc/crontab that runs (ifconfig em0
>> down; ifconfig em0 up) if my cables static ip gateway can't be
>> pinged but I can't figure it out. I can't get the syntax that runs
>> in the command window, to then put intot the crontab....
>>
>> Can anyone help me?
>
> Here's what I'd use:
>
> ping -c 1 a.b.c.d; TESTV=$?; if [ $TESTV != 0 ]; then `ifconfig em0
> down`; fi
>
> HTH
> -----
> Eric F Crist
> Secure Computing Networks
>
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-----
Eric F Crist
Secure Computing Networks
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