Shout out to http://cht.sh, which could be used without installing anything:
curl cht.sh/tr curl cht.sh/trI would also say though that this cheat sheet looks great as well - cheat sheets absolutely have their place next manuals.
function cht() { curl cht.sh/$1 }
Note that https://cheat.sh works too (I find that easier to remember than cht.sh)
cheat () {
curl "cheat.sh/$1"
}e.g. http://cht.sh/tar
$ curl cht.sh/ls?style=bw
Or if you do like colors but not the defaults you can try other styles, see http://cht.sh/:styleshttps://zealdocs.org is another great source, similar to https://devdocs.io