6. Once you've found it, you should be in the root directory("cd /mnt//"). Do these commands:
sudo sed -i 's/10.10.11.249/192.168.1.249/' etc/network/interfaces
sudo sed -i '/s/255.0.0.0/255.255.255.0/' etc/network/interfaces
sudo sed -i '/s/10.1.1.1/192.168.1.1/' etc/network/interfaces
1) I have a Windows PC. So if i boot from USB, will i be able to write to the SD card and modify the network config.?
2) I have a Macbook pro which has a SD card reader. Has anyone got an idea as to what steps i need to follow to make changes to the SD card in mac (if it is possible).
Thanks,
Q1: Step 6 from JaredR26 above is modifying the network config.
Q2: If you have an sd card available, download the image, write it to the sd and put the sd card in your mac. Then check the Finder to see if it mounted the card. If it did, go to the etc/network directory. Is there an interfaces file ?
Tutorial how to write the sd image to a card:
http://www.embeddedarm.com/support/faqs.php?item=10