Bulk Rename

rename utility allows bulk rename of files and/or directories. You can install this utility using $ sudo apt install rename command. Let's say that we want to replace " - lang_en" string from all files in the current directory with, "".

General Syntax:

rename s/"**TO-BE-REPLACED**"/"**REPLACEMENT**"/g *

Now, in our case, we want to run this command in a test or simulation mode before, really renaming the files. We can do so by supplying -n switch.

Simulation / test mode:

Command

$ rename s/" - lang_en"/""/g ./*.srt

Source:

https://askubuntu.com/a/210302