https://blog.youkuaiyun.com/aa1049372051/article/details/46378265
https://ask.youkuaiyun.com/questions/689840
anonymous_enable=YES
#ftp_username=ftp
#anon_root=/data //mkdir -p ./data/software;chown root.root /data;chmod -R 777 /data/software
local_enable=YES
write_enable=YES
local_umask=022 //本地上传或创建目录.目录777-022=755,文件:666-022=644
anon_umask=000 //匿名上传或创建的权限.目录777-000 文件666-000
#file:666 dar:777
file_open_mode=0777 //
chown_upload_mode=0777 //修改上传完后的文件或目录权限
anon_upload_enable=YES
anon_mkdir_write_enable=YES
anon_other_write_enable=YES
dirmessage_enable=YES
xferlog_enable=YES
connect_from_port_20=YES
listen=NO
listen_ipv6=YES
pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES