Thanks, Harry. For the time being, I've incorporated the pieces that define
the variables in the scripts run by cron. It seems there ought to be a way
to make defined variables globally available though, and I haven't been able
to find out how -- I suppose the 'global availability' is really the crux of
my question -- is it possible, and if so, can anyone help me get it to work?
As for your script enhancements, I'll have to look at the man pages to see
what you've done <g>.
Thanks again,
bd
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Harry Putnam
Sent: Saturday, December 09, 2000 10:58 AM
To: [EMAIL PROTECTED]
Subject: (no subject)
"Brad Doster" <[EMAIL PROTECTED]> writes:
> I call the following script from rc.local using the the syntax '.
> /path/script-name'. This makes the variables $DYNIPADDR and $GATEWAY
> available in shell sessions.
>
> #! /bin/bash
> DYNIPADDR=`\
> /sbin/ifconfig | grep "inet addr:" | grep -v "127.0.0.1" | grep -v
> "192.168.0.1" |\
> sed -e 's/:/ /' | awk '{ print $3}'`
> echo Your current Dynamic IP address is: $DYNIPADDR
> export DYNIPADDR
>
> GATEWAY=`\
> /sbin/ifconfig | grep "P-t-P:" |\
> sed -e 's/:/ /' -e 's/:/ /' | awk '{ print $5}'`
> echo Your current Gateway is: $GATEWAY
> export GATEWAY
>
> However, I need the variables available to crond, which doesn't appear to
be
> happening. Ordinarily, no one is logged into this system -- it simply
acts
> as a DSL router.
>
> How do I export the variables such that crond and bash scripts that it
runs
> can see and use them?
The first thing that comes to mind is to put them in crontab right
above any lines that run scripts.
Or maybe in the scripts that crontab runs
You might want to cut down on the number of programs called and call only
one
program. The one true `awk'. .. hehe
If your output looks something like this:
eth0 Link encap:Ethernet HWaddr 00:00:E8:90:99:20
inet addr:206.117.4.160 Bcast:206.117.4.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:71908 errors:0 dropped:0 overruns:0 frame:0
TX packets:61082 errors:0 dropped:0 overruns:0 carrier:0
collisions:29 txqueuelen:100
Interrupt:9 Base address:0xdc00
Only with ppp0 or whatever in place of eth0 then this will do the
first job:
DYNIPADDR=`\
/sbin/ifconfig|awk '/^eth0/ {a=1}\
/UP BROAD/ {a = 0}\
a==1 && /inet addr/{sub(/addr:/,"",$2);print $2}'`
Replacing ^eth0 with ^ppp0 should work for a ppp0 interface.
I think putting that variable assignment at the top of crontab will do
what you want.
Probably something similar possible for the P-t-P but I don't have
that output.
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