View source for Set hostnames from dhcp-server with dhclient on *buntu systems

To make *buntu based systems set the hostname supplied by the dhcp-server use the following script named <tt>hostname</tt>

 #!/bin/sh
 # Filename:     /etc/dhcp/dhclient-exit-hooks.d/hostname
 # Purpose:      Used by dhclient-script to set the hostname of the system
 #               to match the DNS information for the host as provided by
 #               DHCP.
 #
 
 if [ "$reason" != BOUND ] && [ "$reason" != RENEW ] && [ "$reason" != REBIND ] && [ "$reason" != REBOOT ]
 then
         return
 fi
 
 echo dhclient-exit-hooks.d/hostname: Dynamic IP address = $new_ip_address
 hostname=$(host $new_ip_address | cut -d ' ' -f 5 | cut -d '.' -f 1)
 echo $hostname > /etc/hostname
 hostname $hostname
 echo dhclient-exit-hooks.d/hostname: Dynamic Hostname = $hostname

The script should be put in the folder <tt>/etc/dhcp/dhclient-exit-hooks.d</tt>