Bulk rename filenames

Install Thunar

Thunar is the devault filemanager of XFCE. It can be easily installed using sudo apt-get install thunar

But be aware that a lot of XFCE files come along with this installation as Thunar depends on them.

Install Metamorphose 2

This is the most advanced of al available bulk renamers. Metamorphose 2 binaries for Linux (deb and rpm) and Windows are available on SourceForge.

Because these binaries are are pretty old (2011), you can grab the latest version source (which dates to August, 2015) from GitHub.

Ubuntu 15.10 and newer users can install the latest Metamorphose 2 by using the main WebUpd8 PPA:

sudo add-apt-repository ppa:nilarimogard/webupd8

sudo apt-get update

sudo apt-get install metamorphose2

Install pyRenamer

On Ubuntu, install it using the following command, but be aware that the program isn't developed anymore:

sudo apt-get install pyrenamer

Nemo

In Nemo the F2 key opens a bulk renamer option that qorks quite fine.