connecting to bitbucket and github from the same .gitconfig - linux

Question

I have a locally hosted version of bitbucket, and a github account. I want to be able to connect to both easily. I tried this .gitconfig version, does not work seamlessly. What Am I missing? What should I put under user in both systems?
#Github (default)
Host gh
HostName github.com
User ?
IdentityFile ~/.ssh/id.pub
#Bitbucket (secondary)
Host bb
HostName stash.company.com
User ?
IdentityFile ~/.ssh/id.pub

Answer 1

In your local repo, a "remote" is defined to tell git what repository to go to when doing things like push and pull.
The default name is "origin".
So we enter commands like "git pull origin main"
The command "git remote -v" will show the "remotes you have defined, like this:
git remote -v
origin git#github.com:/.git (fetch)
origin git#github.com:/.git (push)
You can define another remote to point to a different remote repo:
git remote add
So if you add a remote and call it bborigin then
git pull bborigin main
would pull the main branch on remote bborigin
(I do not know if you will need special steps to set up authentication on the different remotes)

Answer 2

First, you need to put that in ~/.ssh/config
That means you can:
test your authentication with ssh -Tv gh or ssh -Tv bb
use those Host entries in SSH URLs with
git clone gh:me/myGitHubRepository
git clone bb:me/myBitBucketRepository
Second, a typical global .gitconfig (in $HOME\.gitconfig) would look like:
[alias]
st = status
lg2 = log --graph --format=format:'%C(bold blue)%h%C(reset) - %C(bold cyan)%aD%C(reset) %C(bold green)(%ar)%C(reset)%C(bold yellow)%d%C(reset)%n'' %C(white)%s%C(reset) %C(bold white)- %an%C(reset)' --abbrev-commit
lg = !"git lg2"
br = branch
[user]
name = You
email = your#email.com
[core]
autocrlf = false
safecrlf = false
commitGraph = true
quotepath = false
longpaths = true
[rebase]
autostash = true
autosquash = true
[pull]
rebase = true
[protocol]
version = 2
[gc]
writeCommitGraph = true
[credential "helperselector"]
selected = manager-core
[credential]
helper = manager-core
manager = manager-core
[init]
defaultBranch = main
This assumes you have downloaded and installed GCM (Git Credential Manager), the credential manager which helps caching your credentials (username/password) for HTTPS URL.
Not mandatory in your case, though, if you stick to SSH URLs.