He did this thing where he unified his shell history across thousands of hosts - it was super handy given our extensive use of Ansible playbooks and database managment commands. He could then use a couple hotkeys to query this history within a new open document. Super handy for writing out shell command steps or wrapping things in a bash script you're working on. Unfortunately I don't really have a link to HOW to do this, I just remember thinking "Oh my god, that would save me SO much time".

Nowadays, I just have this giant document with hundreds of our runbook commands and enable Github Copilot to make it SUPER easy to do the same thing without establishing an SSH session in the backend.