change git log email/username

shell

#!/bin/sh
 
git filter-branch --env-filter '
 
an="$GIT_AUTHOR_NAME"
am="$GIT_AUTHOR_EMAIL"
cn="$GIT_COMMITTER_NAME"
cm="$GIT_COMMITTER_EMAIL"

sn="目前的名字"
sm="目前的邮箱"
tn="目标名字"
tm="目标邮箱"
 
if [ "$GIT_COMMITTER_EMAIL" = $sn ]
then
    cn=$tn 
    cm=$tm
fi
if [ "$GIT_AUTHOR_EMAIL" = $sm ]
then
    an=$tn
    am=$tm
fi
 
export GIT_AUTHOR_NAME="$an"
export GIT_AUTHOR_EMAIL="$am"
export GIT_COMMITTER_NAME="$cn"
export GIT_COMMITTER_EMAIL="$cm"
'