====== FTP上傳作業環境 ======

僅允許上傳，不能下載或刪除。

vim /etc/vsftpd.conf
加入 user_config_dir=/etc/vsftpd/vsftpd_user_conf 


vim /etc/vsftpd/vsftpd_user_conf/username
加入 cmds_denied=DELE,RNFR,RNTO,RMD,RETR,MKD,APPE


<code>
ABOR - abort a file transfer
CWD - change working directory
DELE - delete a remote file
LIST - list remote files
MDTM - return the modification time of a file
MKD - make a remote directory
NLST - name list of remote directory
PASS - send password
PASV - enter passive mode
PORT - open a data port
PWD - print working directory
QUIT - terminate the connection
RETR - retrieve a remote file
RMD - remove a remote directory
RNFR - rename from
RNTO - rename to
SITE - site-specific commands
SIZE - return the size of a file
STOR - store a file on the remote host
TYPE - set transfer type
USER - send username
</code>

參考

  * https://yulun.me/2013/setup-vsftpd-for-upload-homework-on-ubuntu/

===== UTF8 =====

增加以下設定才會顯示utf8 feature
utf8_filesystem=YES