Question

I am using a git repository with github. With all the commits and logs I have in the repository , now I need to remove all the commits from a specific user ( say User1) . How do I remove all his commits ?

Answer 1

Yes. The man page of git filter-branch provides a ready-made example: this removes all commits from “Darl McBribe” from the working tree (in your case, this would be User1).

git filter-branch --commit-filter '
    if [ "$GIT_AUTHOR_NAME" = "Darl McBribe" ];
    then
            skip_commit "$@";
    else
            git commit-tree "$@";
    fi' HEAD

where the function skip_commit is defined as follows:

skip_commit()
{
    shift;
    while [ -n "$1" ];
    do
            shift;
            map "$1";
            shift;
    done;
}

But, as always when changing the history of your repo: if someone pulled from the repo before you modify it, he’ll be in trouble.