You'd be surprised at how god-damn much those command line tools actually do.
If you open up a manpage for ls on mac, you’ll see that it starts with
ls [-ABCFGHLOPRSTUW@abcdefghiklmnopqrstuwx1] [file ...]
That is, the one-letter flags to ls include every lowercase letter except for {jvyz}, 14 uppercase letters, plus @ and 1. That’s 22 + 14 + 2 = 38 single-character options alone.
I like seeing this applied on the macro level too. ie keeping a command line tool specialised to doing one specific task very well.
You'd be surprised at how god-damn much those command line tools actually do.
Also Google's rule for browser extensions, each extension should do one thing.