How to tell git to use the correct identity (name and email) for a given project?

I use my personal laptop for both work and personal projects and I would like to use my work email address for my commits at work (gitolite) and my personal email address for the rest (github).

I read about the following solutions which are all either global or temporary:

git config --global user.email "bob@example.com"
git config user.email "bob@example.com"
git commit --author "Bob <bob@example.com>"
setting one of the GIT_AUTHOR_EMAIL, GIT_COMMITTER_EMAIL or EMAIL environment variables

One solution is to run manually a shell function that sets my environment to work or personal, but I am pretty sure that I will often forget to switch to the correct identity resulting in committing under the wrong identity.

Is there a way of binding a certain repository, project name, etc. to an identity (name, email)? What do people do?

git config user.email "bob@example.com"

Doing that one inside a repo will set the configuration on THAT repo, and not globally.

Seems like that's pretty much what you're after, unless I'm misreading you.

Mahmoud Zalt

You need to use the local set command below:

local set

git config user.email mahmoud@company.ccc
git config user.name 'Mahmoud Zalt'

local get

git config --get user.email
git config --get user.name

The local config file is in the project directory: .git/config.

global set

git config --global user.email mahmoud@zalt.me
git config --global user.name 'Mahmoud Zalt'

global get

git config --global --get user.email
git config --global --get user.name

The global config file in in your home directory: ~/.gitconfig.

Remember to quote blanks, etc, for example: 'FirstName LastName'

arulraj.net

Edit the config file with in ".git" folder to maintain the different username and email depends upon the repository

Go to Your repository
Show the hidden files and go to ".git" folder
Find the "config" file
Add the below lines at EOF

[user]

name = Bob

email = bob@example.com

This below command show you which username and email set for this repository.

git config --get user.name

git config --get user.email

Example: for mine that config file in D:\workspace\eclipse\ipchat\.git\config

Here ipchat is my repo name

If you use git config user.email "foo@example.com" it will be bound to the current project you are in.

That is what I do for my projects. I set the appropriate identity when I clone/init the repo. It is not fool-proof (if you forget and push before you figure it out you are hosed) but it is about as good as you can get without the ability to say git config --global user.email 'ILLEGAL_VALUE'

Actually, you can make an illegal value. Set your git config --global user.name $(perl -e 'print "x"x968;')

Then if you forget to set your non-global values you will get an error message.

[EDIT] On a different system I had to increase the number of x to 968 to get it to fail with "fatal: Impossibly long personal identifier". Same version of git. Strange.

If you don't use the --global parameter it will set the variables for the current project only.

As of Git 2.13 you can use an includeIf in your gitconfig to include a file with a different configuration based on the path of the repository where you are running your git commands.

Since a new enough Git comes with Ubuntu 18.04 I've been using this in my ~/.gitconfig quite happily.

[include]
  path = ~/.gitconfig.alias # I like to keep global aliases separate
  path = ~/.gitconfig.defaultusername # can maybe leave values unset/empty to get warned if a below path didn't match
# If using multiple identities can use per path user/email
# The trailing / is VERY important, git won't apply the config to subdirectories without it
[includeIf "gitdir:~/projects/azure/"]
  path = ~/.gitconfig.azure # user.name and user.email for Azure
[includeIf "gitdir:~/projects/gitlab/"]
  path = ~/.gitconfig.gitlab # user.name and user.email for GitLab
[includeIf "gitdir:~/projects/foss/"]
  path = ~/.gitconfig.github # user.name and user.email for GitHub

https://motowilliams.com/conditional-includes-for-git-config#disqus_thread

To use Git 2.13 you will either need to add a PPA (Ubuntu older than 18.04/Debian) or download the binaries and install (Windows/other Linux).

One solution is to run manually a shell function that sets my environment to work or personal, but I am pretty sure that I will often forget to switch to the correct identity resulting in committing under the wrong identity.

That was exactly my problem. I have written a hook script which warns you if you have any github remote and not defined a local username.

Here's how you set it up:

Create a directory to hold the global hook

mkdir -p ~/.git-templates/hooks
Tell git to copy everything in ~/.git-templates to your per-project .git directory when you run git init or clone

git config --global init.templatedir '~/.git-templates'
And now copy the following lines to ~/.git-templates/hooks/pre-commit and make the file executable (don't forget this otherwise git won't execute it!)

#!/bin/bash

RED='\033[0;31m' # red color
NC='\033[0m' # no color

GITHUB_REMOTE=$(git remote -v | grep github.com)
LOCAL_USERNAME=$(git config --local user.name)

if [ -n "$GITHUB_REMOTE" ] && [ -z "$LOCAL_USERNAME" ]; then
    printf "\n${RED}ATTENTION: At least one Github remote repository is configured, but no local username. "
    printf "Please define a local username that matches your Github account.${NC} [pre-commit hook]\n\n"
    exit 1
fi

If you use other hosts for your private repositories you have to replace github.com according to your needs.

Now every time you do a git init or git clone git will copy this script to the repository and executes it before any commit is done. If you have not set a local username it will output a warning and won't let you commit.

来源：https://stackoverflow.com/questions/6116548/how-to-tell-git-to-use-the-correct-identity-name-and-email-for-a-given-project

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