1.建立本地虚拟用户 代码: useradd -d /opt/ftp-server Crazycen     #新建Crazycen用户,指定主目录为/opt/ftp-server mkdir /opt/ftp-server Crazycen 2.查看所有用户 cat /etc/shadow 3.修改密码 # passwd root New UNIX password: Retype new UNIX password: passwd: all authentication tokens updated succe…