Linux Command - tldr
The linux tldr command provides really quick command info that is concise, practical, and useful. It serves a similar purpose to man, help, or info except that it provides the most practical info.
Install it first:
sudo apt install tldr
Need to update the database of pages before it can be used:
tldr -u
Use tldr to get concise docs for these commands:
tldr ls
tldr find
tldr grep