How to change the author and committer name and e-mail of multiple commits in Git?

Question

I was writing a simple script in the school computer, and committing the changes to Git (in a repo that was in my pendrive, cloned from my computer at home). After several c

Answer 1

I adapted this solution which works by ingesting a simple author-conv-file (format is the same as one for git-cvsimport). It works by changing all users as defined in the author-conv-file across all branches.

We used this in conjunction with cvs2git to migrate our repository from cvs to git.

i.e. Sample author-conv-file

john=John Doe 
jill=Jill Doe 

The script:

 #!/bin/bash

 export $authors_file=author-conv-file

 git filter-branch -f --env-filter '

 get_name () {
     grep "^$1=" "$authors_file" |
     sed "s/^.*=\(.*\) <.*>$/\1/"
 }

 get_email () {
     grep "^$1=" "$authors_file" |
     sed "s/^.*=.* <\(.*\)>$/\1/"
 }

 GIT_AUTHOR_NAME=$(get_name $GIT_COMMITTER_NAME) &&
     GIT_AUTHOR_EMAIL=$(get_email $GIT_COMMITTER_NAME) &&
     GIT_COMMITTER_NAME=$GIT_AUTHOR_NAME &&
     GIT_COMMITTER_EMAIL=$GIT_AUTHOR_EMAIL &&
     export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL &&
     export GIT_COMMITTER_NAME GIT_COMMITTER_EMAIL
 ' -- --all