Fdupes is a free and open source command line duplicate file finder application for Linux. Using Fdupes, you can find, replace and remove duplicate files from your system easily. It is released under MIT License. It compares MD5 signature of files and a byte-to-byte comparison to find duplicate.
How to Install Fdupes on Ubuntu
To install Fdupes on your system, run below command in the terminal (ctrl+alt+t) application.
sudo apt install fdupes
After the successful installation of Fdupes, run below command in terminal. This command will search for duplicate files in your Downloads folder.
For the complete Fdupes usage details, run below command.