Listing IP Addresses of a Server

I hate using the jarbled output of ifconfig to find out what ip addresses are active on a server, so using this complex command will list all the IP addresses of the server in a nice little list:

ifconfig | grep 'inet addr:'| grep -v '' | cut -d: -f2 | awk '{ print $1}'

I specifically use this command for a VPS setup script that I was working on to automatically input the correct server IP into the httpd.conf and named entries on cloned systems, so I don’t have to do it manually. To do this you would just assign the command as a variable, then call that variable with the replace command:

IP=`ifconfig | grep 'inet addr:'| grep -v '' | cut -d: -f2 | awk '{ print $1}'`
cat httpd.conf |replace 123.456.789.123 $IP --httpd.conf

If you want to incorporate this into a PHP script, you just need to use the system() function, assuming your host allows it:

<?php system("ifconfig | grep 'inet addr:'| grep -v '' | cut -d: -f2 | awk '{ print $1}'"); ?>

Be Sociable, Share!

3 thoughts on “Listing IP Addresses of a Server

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>