Shell Programming and Scripting

Hi all,

I'm stuck on this last part...am running a simple script under AIX to extract NetView host IP addresses. The line below returns the IP address in parenthesis with a trailing colon, i.e.

ping -c 1 $name |grep \( | awk '{ print $3 }' --------> returns

(a.b.c.d):

How can I only remove the parens and colon while leaving the IP address?

Thanks!

To get the IP address , I used the following:

Code:

export HOST=`uname -n`
export ip=`cat /etc/hosts | grep -v ^# | grep -v 127.0.0.1 | grep -w ${HOST} | awk '{print $1}'`

More purified ....

Nir

what does the 'ping -c 1 $name' return AND what would you like to get back?

I don't think there's a need to 'grep' feeding 'awk' and [maybe] feeding another awk/sed.

wow... this should be UUOC and UUOG^3 [among others].....

Code:

ip=$( nawk -v host="$(uname-n)" '!/^#/ && !/^127.0.0.1/ && $2 == host {print $1}' /etc/hosts )

Wow, quick responses. I probably should have posted the entire source. As you can tell I'm not a coder ;-) What I need to do is run a command that dumps out the list of hostnames from a database; I then feed them through a loop that pings the hostname. I'm trying to scrape the IP address out of the result and ultimately produce a file that has hostname <tab> IP address.

HOSTNAME=`ovtopodump -rl |grep HOSTNAME | cut -f2 -d\ `

for name in $HOSTNAME
do
ping -c 1 $name |grep \( | awk '{ print $3 }'
done


Right now I'm getting the IP address but need to clean out the surrounding crud! And I do realize grep and awk aren't needed on the same line. I do this so infrequently and the scripts are usually run once or maybe run daily.

once again, could you post the output of 'ping -c 1 name' AND describe what part of it you need.

YMMV:

Code:

echo '64 bytes from skywalker (192.168.64.205): icmp_seq=0. time=0. ms' | nawk -F'[()]' '{print $2}'

Sorry about that--output is below. I need the IP address just like you have in your example above:

PING server1.us.xxxxx.com: (10.26.10.31): 56 data bytes
64 bytes from 10.26.10.31: icmp_seq=0 ttl=128 time=0 ms

----server1.us.xxxxx.com PING Statistics----
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max = 0/0/0 ms


Grepping for the first paren and awking gets me the IP address, just gotta clean it up. Appreciate the help folks!