1.gpasswd -a groupName userName
对应gpasswd的详解来自http://man.linuxde.net/gpasswd
2.usermod -g groupName userName
对应usermod的详解来自https://blog.youkuaiyun.com/longshenlmj/article/details/44080893
对应gpasswd的详解来自http://man.linuxde.net/gpasswd
对应usermod的详解来自https://blog.youkuaiyun.com/longshenlmj/article/details/44080893