I just use my bach history. I set it to never expire and I back it up, so it has years of commands I can search, either with Ctrl-R or history|grep. Sometimes I

I just use my bach history. I set it to never expire and I back it up, so it has years of commands I can search, either with Ctrl-R or history|grep. Sometimes I put comments in them to help with searching later. [edit: turns out a lot of people do that!]