Configuring git for multiple personas:

generate new key

gpg --full-generate-key

gpg (GnuPG) 2.4.3; Copyright (C) 2023 g10 Code GmbH

Please select what kind of key you want:

Please select which elliptic curve you want:

Please specify how long the key should be valid.

Is this correct? (y/N)

GnuPG needs to construct a user ID to identify your key.

Real name: David Vasandani

Email address: david@vasandani.me

Comment:

You selected this USER-ID:

"David Vasandani <david@vasandani.me>"

Change (N)ame, (C)omment, (E)mail or (O)kay/(Q)uit? O

export your public key

list existing keys and copy the ID; it’s preceded by: sec ed25519/ and export the public key to your clipboard.

gpg --list-secret-keys --keyid-format=long

sec ed25519/31AF7204918814FF 2023-11-08 [SC]

gpg --armor --export 31AF7204918814FF > pbcopy

Add the key to your GitHub profile[1].

1: https://github.com/settings/keys

configure your git client

➜ dev cat ~/.gitconfig

...

[includeIf "gitdir:~/src/"]

path = /Users/davidvasandani/.config/git/.gitconfig-personal

[includeIf "gitdir:~/dev/"]

path = /Users/davidvasandani/.config/git/.gitconfig-work```

...

------------------------------------------------------------

➜ dev cat /Users/davidvasandani/.config/git/.gitconfig-personal

[user]

name = David Vasandani

email = david@vasandani.me

signingkey = 32F2F19BDBA28E38

[commit]

gpgsign = true

------------------------------------------------------------

➜ dev cat /Users/davidvasandani/.config/git/.gitconfig-work

[user]

name = David Vasandani

email = david.vasandani@sweetgreen.com

signingkey = 31AF7204918814FF

[commit]

gpgsign = true

amend a group of commits to sign them

git rebase --exec 'git commit --amend --no-edit --author="David Vasandani <david@vasandani.me>" -n -S' -i main

Next Steps

Improve the experience with 1Password.

https://blog.1password.com/git-commit-signing/[1]

1: https://blog.1password.com/git-commit-signing/