How to stop or quit cat command?

If you are looking at the content of a huge file in Terminal (Console) using cat command using | more or | less options, you will see that only certain lines are printed out on the Terminal and a qolon is displayed at the end, you can press spacebar to display the next set of lines.

How to exit or stop cat command?

In order to stop/exit/quit cat command, you can simply press key q, you should return to the prompt.