Cow Computing

Here, i would like to share with you all some commands that is useful in extracting network information from the OS.

1. Extracting IP of the current machine

ifconfig | grep 'inet addr:' | grep -v '127.0.0.1' | cut -d: -f2 | awk '{print $1}'

2. Getting the Gateway of the current machine

route -n | grep 'UG[ \t]' | awk '{print $2}'

3. Updating the network settings

// ifconfig <network interface> <ip> netmask <subnetmask> broadcast <broadcast address>
ifconfig eth0 192.168.0.10 netmask 255.255.255.0 broadcast 192.168.0.255

4. Updating Gateway

// in order to achieve this, we need to first delete the
// existing gateway entry and then add the new one
route del default

// route add -net default gw <gateway address> netmask 0.0.0.0 dev eth0;
route add -net default gw 192.168.0.255 netmask 0.0.0.0 dev eth0