If you often work in both Nautilus and command line at the same time,you may be bored with switching windows between them.Nautilus-terminal is a solution that integrate a CLI (command line interface) into Nautilus file browser.

Install Nautilus-terminal:

Run following command in Applications->Accessories->Terminal:

sudo add-apt-repository ppa:flozz/flozz
sudo apt-get update
sudo apt-get install nautilus-terminal

In Ubuntu 9.04 and earlier version,read this guide on installing PPA’s.

Press Alt+F2 and type nautilus -q to restart Nautilus.
And now when you open up Nautilus browser,you will see this CLI sync its location to Nautilus’