Is it possible to add an item to the Nautilus right click menu in CentOS?

You can use the tool nautilus-actions to do this. The main website is accessible here: http://www.nautilus-actions.org/. Should be in the standard repositories.

Installation

$ sudo yum install nautilus-actions

Usage

It can be invoked like this:

$ nautilus-actions-config-tool

It can also be invoked via pull downs: System -> Preferences -> Nautilus Action Configuration.

The main window looks like this:

When you invoke Nautilus you'll see it on the right context menu when right clicking on a file:

                                        

References

• Using Nautilus Actions to Extend File Manager Functionality on Linux