How to change author of git commit using ssh keys

Question

I have created the ssh key and added it to my gitlab account.

Then, I've made a commit:

git add .
git commit -m "w"
git push origin master

(https://prnt.sc/q7yc4q)

But as you can see my username when I committed was root(this is because user on my laptop is root

• 1)How do I set the desired username let's call it batman, so instead of root I want batman to be displayed as commit author?

• 2)Can I do this using only gitlab interface and without messing with my git config on my laptop? (I am asking because I have several git accounts and I need to use different accoounts for my projects)

Answer 1

How do I set the desired username let's call it batman, so instead of root I want batman to be displayed as commit author?

Setting username/email for ALL projects

# Set the username for git commit
git config --global user.name "<your name>"

# Set the emailfor git commit
git config --global user.email "<your email address>"

... I need to use different accounts for my projects

Setting username/email for single projects

# --local is the default so you don't have to add it

# Set the username for git commit
git config --local user.name="<your name>"

# Set the emailfor git commit
git config --local user.email="<your email address>"

---

Replacing the wrong author in commit (will update all the commits to your user)

git filter-branch -f --env-filter '
    GIT_AUTHOR_NAME="Newname"
    GIT_AUTHOR_EMAIL="newemail"
    GIT_COMMITTER_NAME="Newname"
    GIT_COMMITTER_EMAIL="newemail"
  ' HEAD

Replacing the wrong author in the latest commit

# Update the username and email as explained above
# Re-commit to update the username/email
git commit --amend --no-edit