Git 配置与技巧

1. Configuration

SSH Key Generation

Generate a new SSH key (RSA 4096-bit):

ssh-keygen -t rsa -b 4096 -C "your_email@example.com"

User Identity

Set your global username and email:

git config --global user.name "Your Name"
git config --global user.email "your_email@example.com"

Proxy Settings

Configure Git to use a proxy (e.g., HTTP proxy at 127.0.0.1:8888):

git config --global http.proxy http://127.0.0.1:8888
git config --global https.proxy http://127.0.0.1:8888

To unset:

git config --global --unset http.proxy
git config --global --unset https.proxy

2. Modify Commit History

Rewriting history is destructive. Ensure you have a backup before proceeding. git filter-branch is deprecated; consider using git-filter-repo for better performance and safety.

Change Author Info (All Commits)

git filter-branch --env-filter 'export GIT_AUTHOR_EMAIL=new_email@example.com' --

Change Specific Author Info

Replace Old@Email, Changed Name, and Changed@Email with actual values.

git filter-branch -f --env-filter '
OLD_EMAIL="Old@Email"
CORRECT_NAME="Changed Name"
CORRECT_EMAIL="Changed@Email"

if [ "$GIT_COMMITTER_EMAIL" = "$OLD_EMAIL" ]
then
    export GIT_COMMITTER_NAME="$CORRECT_NAME"
    export GIT_COMMITTER_EMAIL="$CORRECT_EMAIL"
fi
if [ "$GIT_AUTHOR_EMAIL" = "$OLD_EMAIL" ]
then
    export GIT_AUTHOR_NAME="$CORRECT_NAME"
    export GIT_AUTHOR_EMAIL="$CORRECT_EMAIL"
fi
' --tag-name-filter cat -- --branches --tags

3. Logs

Filter by Author

git log --author="Author Name"

4. Tips

• Git History Visualization: Replace .com with .githistory.xyz in any GitHub file URL to see a visual history of that file.