The [github for cheat is here](https://github.com/cheat/cheat).

To install (from the github readme)
```bash
cd /tmp \
  && wget https://github.com/cheat/cheat/releases/download/4.4.2/cheat-linux-amd64.gz \
  && gunzip cheat-linux-amd64.gz \
  && chmod +x cheat-linux-amd64 \
  && sudo mv cheat-linux-amd64 /usr/local/bin/cheat
```
then your cheatsheets are in `~/.config/cheat/cheatsheets`.