误删vsftpd.conf解决办法

尝试以下命令：

sudo apt-get clean
 sudo apt-get update
 sudo apt-get install --reinstall vsftpd
If this did not work, purge vsftpd (remove it including its configuration files) and reinstall it:(删除配置文件然后重装)
sudo apt-get purge vsftpd
 sudo apt-get install vsftpd