git multiple user names for the different projects within the same system [duplicate]

I have a different git repository for my office and a different git repo for my hobby projects.

When I do git config --global user.name the user name changes globally and this creates a confusion of committing to a repo with user name.

Hence the question is how can i have the same username across all my hobby projects and the same username across the office projects. I use the same machine to work on both the places.

Just use --local instead of --global. In fact, local is the default so you can just do

git config user.email [email protected]
git config user.name "whatf hobbyist"

in one repo, and

git config user.email [email protected]
git config user.name "whatf at work"

in another repo

The values will then be stored in in the .git/config for that repo rather than your global configuration file.

Omit the --global from your call to git config:

git config user.name "A. U. Thor"

This will set the property in the current repository.