How to make "Search on Google" available in selected text's context menu in gnome-terminal?

Yes, there is an option. First download the following deb packages:

• the data package: gnome-terminal-data_3.6.1_all.deb

• the main package: gnome-terminal_i386.deb (for 32-bit OS) or gnome-terminal_amd64.deb(for 64-bit OS)

Second, install them using the following commands in your terminal:

sudo dpkg -i /path/to/gnome-terminal-data_3.6.1-0ubuntu4.1_all.deb

sudo dpkg -i gnome-terminal_3.6.1-0ubuntu4.1_i386.deb
#or, depending on what you downloaded
sudo dpkg -i gnome-terminal_3.6.1-0ubuntu4.1_amd64.deb

And third, restart your terminal.

From now, when you will open your gnome-terminal you can quickly search on Google command line errors, warnings and other things. Highlight the text, right-click on it and choose "Search on Google". It opens the default web browser and go to the google search result page:

Source: Add Google Search to Gnome Terminal in Ubuntu 13.10

Using Colinker, a customizable context menu for selected text, you can search selected text in any application not just the gnome terminal. On Linux systems, Colinker is designed to be used with xbindkeys and xclip.