git change username and email for commit code example

Example 1: change git username and email

$ git config --global user.email "[email protected]"

Example 2: git change commit id email

$ git config --global user.name "John Doe"
$ git config --global user.email "[email protected]"

Example 3: change git commit email

git filter-branch --env-filter '
WRONG_EMAIL="[email protected]"
NEW_NAME="New Name Value"
NEW_EMAIL="[email protected]"

if [ "$GIT_COMMITTER_EMAIL" = "$WRONG_EMAIL" ]
then
    export GIT_COMMITTER_NAME="$NEW_NAME"
    export GIT_COMMITTER_EMAIL="$NEW_EMAIL"
fi
if [ "$GIT_AUTHOR_EMAIL" = "$WRONG_EMAIL" ]
then
    export GIT_AUTHOR_NAME="$NEW_NAME"
    export GIT_AUTHOR_EMAIL="$NEW_EMAIL"
fi
' --tag-name-filter cat -- --branches --tags