首先检查Centos中有没有安装 lrzsz sudo yum install lrzsz 使用yum install的时候碰到一个问题, 不知道是否和虚拟机环境有关 Existing lock /var/run/yum.pid: another copy is running as pid 3604. Another app is currently holding the yum lock; waiting for it to exit... The other application is