[asveikau]

I feel like the basics are simple and intuitive. Enough use of it and you will not consult docs for the most basic tasks. Then you start to think "but how do I...?" and go to google. I tend to also forget the answer after a few months.

[bigbubba]

> I tend to also forget the answer after a few months

You can add comments to the end of tricky commands with the # character. Then at a later date you can search for commands using the contents of those comments, using something like C-r.

[asveikau]

On some machines I don't have ~/.history. On others, there is a size limit so when I grep the history file after a few months it might not be there.

Personally, rather than interactively putting comments in my shell input, I prefer to write scripts or take notes in a text file.