File Transfer Protocol

Commands

USER R User name, userid for access control PASS O Password for access control ACCT O Account info CWD O Change working directory CDUP O Change to parent directory SMNTO Structure mount, mount a different

file system QUIT R informs server that client wants out REIN O restarts session at authentication

phase PORT R Host addr and data port to use

FTP Commands

PASV O Passive; informs server that client will contact to set up data connections, ask server to sent port info

TYPE R Data type, type of subsequent transfers

STRU R File structure MODE R Transfer mode RETR R Retrieve, download the file from server STOR R Store, upload the specified to server STOU O Store unique, same as store but server

picks unique file name

FTP Commands (Cont..)

APPE O Append, upload file to server, if file name exists, append the upload

ALLO O Allocate, sometimes used to preallocate space

REST O Restart, restart an interrupted transfer RNFR O Rename file from filename RNTO O Rename file to ABOR O Abort, ask server to abort last command DELE O Delete specified file RMD O Remove directory MKD O Make directory

FTP Commands (Cont..)

PWD O Print working directory LIST O Request directory listing NLST O Request just a file name list SITE O Site parameters, allow client to

specify site specific options and parameters

SYST O request server operating system STAT O Request server to send status of

current xfr HELP O general and command specific NOOPR ask server to send a positive reply

FTP Commands (Cont..)