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github在统计提交的时候，会判断邮箱是否跟github的登陆邮箱匹配，不匹配则不计算活跃度，即不生成小绿块。
获取配置
yinlijun@yinlijun:~/personal_github/johnny-blog$ git config user.email
aaa@aaa.com
yinlijun@yinlijun:~/personal_github/johnny-blog$ git config user.name
aaa设置当前仓库的user.name/user.email
yinlijun@yinlijun:~/personal_github/johnny-blog$ git config user.email aaa
yinlijun@yinlijun:~/personal_github/johnny-blog$ git config user.email aaa@aaa.com设置全局user.name/user.email
yinlijun@yinlijun:~/personal_github/johnny-blog$ git config --global user.name yinlijun
yinlijun@yinlijun:~/personal_github/johnny-blog$ git config --global user.email yinlijun2004@gmail.com如果当前仓库未设置user.name/user.email则采用全局的user.name/user.email，否则当前仓库的user.name/user.email会覆盖全局的user.name/user.email。