Pomodoro timer is a time management idea to help people focus on a task. The basic idea is that you have some amount of time you will focus, in this app the default is 25 minutes. Then after that you have a break, the default here is 5 minutes. You do this for a certain amount of times here its 4 times then you take a long break. After that you start over until your task is done.
For a more detailed explanation: https://en.wikipedia.org/wiki/Pomodoro_Technique
This file lets you change default values so you don't always have to type them in
-h: will explain all arguments you can give the script
-nw: will be start the app in GUI-less mode so it will run in your terminal
-GUI
r: restarts timer
space: start and pause timer
esc: quit program