[Unit]Description=Very Secure FTP Daemon[Service]Type=simple# Note: Do not use ExecStartPre=/usr/libexec/vsftpd-checkconfig.sh, as it# requires one of the listen options to be enabled.ExecStart=/usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf -obackground=NO -olisten=NO -olisten_ipv6=NOStandardInput=socketSuccessExitStatus=2