need a quick basic shell script help

eb222 · #1 (**permalink**) 11-22-2007

im trying to run the below if command

ifconfig -a |grep 10.100.120.21

gives me below output
inet addr:10.100.120.21 Bcast:10.100.120.255 Mask:255.255.255.0

i just want a basic shell which says if above exists then continue

how would i do this?

porter · #2 (**permalink**) 11-22-2007

Code:

#!/bin/sh

ifconfig -a |grep 10.100.120.21 
if test "$?" = "0"
then
     echo I found the address
else
     echo I did not find the address
fi

Cameron · #3 (**permalink**) 11-22-2007

Hi Porter,
What OS is ` ifconfig -a ` used in, doesn't work for HP-UX.

eb222 · #4 (**permalink**) 11-22-2007

thanks that worked -ifconfig -a is used to find ethernet addresses

porter · #5 (**permalink**) 11-22-2007

Quote:

Originally Posted by Cameron

Hi Porter,
What OS is ` ifconfig -a ` used in, doesn't work for HP-UX.

Solaris, NetBSD, Linux ... it's fairly common. It does the command for all interfaces.

Cameron · #6 (**permalink**) 11-22-2007

Cheers porter.
Thought I was missing something there for a moment.

grial · #7 (**permalink**) 11-22-2007

Code:

[[ ! -z "$(ifconfig -a | grep 10.100.120.21)" ]] && echo Exists

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