Have you ever had any doubts about the meaning of the arguments of some command-line tools?

https://explainshell.com is a tool where you write the command and it explains you in an easy way the meaning of each of the parameters.

For example if you write:

ssh -i keyfile -f -N -L 1234:www.google.com:80 host

The output of the ths tool will be:

Or maybe:

cut -d ‘ ‘ -f 1 /var/log/apache2/access_logs | uniq -c | sort -n

command-line shell