On Mon, Jan 03, 2000 at 09:23:54AM -0500, Michael J. McGillick wrote:
> Morning Everyone:
> I'm stuck on a small problem. I'm trying to parse out the IP address of
> my DHCP server for a variable in a script. From the command line, I've
> gotten this far:
> pump -s | grep "Boot" | cut -f 2
> This yields:
> Boot server 24.128.1.34
> Of course, when I looked at the output of the pump -s command, the only
> field I needed the IP address from was this, and, of course, there is no
> ":" to mark as a delimiter. Notice all of the other fields have it. My
> question is, how do I grab the IP address and not the other information?
> I'm going to eventually need to assign this to a variable in my ipchains
> firewall script, so I'm thinking the correct syntax will be:
> variable_name = `pump -s | grep "Boot" | cut -f 2 ...`
> Any ideas?
IPADDRESS=`expr $variable_name : '\([0-9]*\.[0-9]*\.[0-9]*\.[0-9]*\)'
This will find the first "doted quad" in the $variable_name string,
extract it, and set $IPADDRESS to it.
man expr
> - Mike
Mike
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Michael H. Warfield | (770) 985-6132 | [EMAIL PROTECTED]
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