ubuntu · 2

• $

  hostname --change

  Changing the hostname

  September 26, 2026·2 min read·#macos#ubuntu#networking#hostname#setup

  Rename a machine properly on macOS and Ubuntu, including the parts that quietly revert it on the next reboot.

• $

  ssh-keygen -t ed25519

  SSH keys you only unlock once

  September 26, 2026·4 min read·#ssh#security#macos#ubuntu#zsh

  Create SSH keys and add them to a host or to GitHub or another version control service.