have at it!

taken from Gitlab’s manual page for creating a key, but i wonder what else could be done to expand on it.

#~/.gitconfig
[includeIf "hasconfig:remote.*.url:https://gitlab.com/**"]
path = /path/to/gitlab.gitconfig
[includeIf "hasconfig:remote.*.url:https://github.com/**"]
path = /path/to/github.gitconfig

#example gitlab gitconfig from the included path
[user]
name = Your Name
email = 0000000-YourName@users.noreply.gitlab.com
signingkey = 0000999988887777

[commit]
gpgsign = true

if all works well, Git should be able to automatically use the selected key depending on the repo’s stated remote server.

you dont have to switch

git will automatically select one that works

I have the same password protected ssh key for every git site i am on tho. The sites only know the public key so its fine.

If you’re using OpenSSH, the IdentityFile configuration directive selects the SSH key to use.

Add something like this to your SSH config file (~/.ssh/config):

Host github.com
  IdentityFile ~/.ssh/github_rsa

Host gitlab.com
  IdentityFile ~/.ssh/gitlab_rsa

This will use the github_rsa key for repositories hosted at github.com, and the gitlab_rsa key for repositories hosted at gitlab.com. Adjust as needed for your key names and hosts, obviously.