regex

I'm working on a collection of commands to run against wordlists for optimization and have 3 questions regarding the command below. The command (including vague description) is: # Get rid of passwords containing non-ascii or non-visible characters (except for the space) grep --extended-regexp...

What is the difference between -E and -e in grep in Kali Linux? Because both are for regexp so which one is better to use and why? And the difference between both.

I am using a tool, yt-dlp, to download multiple video files from e.g. YouTube. I usually download playlist limiting to a certain time interval. Now I want to also be able to limit by file title. I have asked at the yt-dlp site on GitHub and received an answer, however I must not understand how...