I’m the guy who runs the site and wrote pretty much all of its content.

More info about why I started this site can be found on the About page.

Contact

• https://keybase.io/jms1

Recent Posts

• Adding git commit/date info to mdbook "books"
  2022-03-08 - John Simpson - (mdbook)
  Last updated 2022-03-08
  How to add git commit/date info to sites generated by mdbook
• Creating a "book" with mdbook
  2022-03-08 - John Simpson - (mdbook)
  Last updated 2022-09-10
  Simple walk-through of creating a "book" using mdbook.
• Puppet - ensure_packages()
  2022-02-24 - John Simpson - (Puppet)
  Last updated 2022-02-24
  Notes about Puppet's ensure_packages() function
• Debian 10 on a MacBook Pro
  2021-01-09 - John Simpson - (Debian)
  Last updated 2022-01-22
  Notes from installing Debian 10 on a MacBook Pro
• Installing Jekyll on an arm64 Mac
  2021-01-02 - John Simpson - (Jekyll, Mac)
  How to install Jekyll on a Mac with an arm64 processor.
• Upside-Down Characters
  2020-12-24 - John Simpson - (Reference)
  ˙ʇxǝʇ uʍop-ǝpᴉsdn ɹoɟ sǝpoɔ ɟo ʇsᴉ˥
• Authentication Subkeys
  2019-02-01 - John Simpson - (PGP, SSH, Yubikey)
  How to add an authentication subkey to an existing GPG key, for use as an SSH key.
• Make SSH use gpg-agent
  2018-04-01 - John Simpson - (Mac, PGP, SSH, Yubikey)
  Last updated 2022-01-22
  How to make SSH commands use a secret key stored on a YubiKey.
• Reset the YubiKey OpenPGP App
  2017-12-13 - John Simpson - (PGP, Yubikey)
  How to reset the OpenPGP app on a YubiKey Neo.
• Load PGP keys into a YubiKey
  2017-12-13 - John Simpson - (PGP, Yubikey)
  Last updated 2021-01-22
  How load PGP keys into a YubiKey, so they can be used for PGP and SSH.