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Old 01-17-2006, 08:44 AM   #1
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ftp server CWD error

I keep getting a "invalid command" when attempting to CWD on my ftp server. I have tried both vsftpd and proftpd and get same results. I am running SuSE 10.0. I have installed and used proftpd several times in the past without this problem and have finally run out of ideas. Thanks for any help.
Old 01-17-2006, 10:58 AM   #2
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Are you sure the problem is not due to the client? Like a winblows client?
If yo have access to the FTP command QUOTE, then send a direct command to the server to be sure that it does not come from the client
220 FTP server (Version 6.5/OpenBSD, linux port 0.3.2) ready.
Name ( nx
331 Password required for nx.
230 User nx logged in.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> quote cwd
250 CWD command successful.
ftp> quit
edit: I remembered I had a proftpd running on my own machine.

nx@Debian:~$ ftp localhost
Connected to localhost.localdomain.
220 ProFTPD 1.2.10 Server (Debian) []
Name (localhost:nx): nx
331 Password required for nx.
230 User nx logged in.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> CWD
?Invalid command
ftp> help
Commands may be abbreviated.  Commands are:

!               debug           mdir            qc              send
$               dir             mget            sendport        site
account         disconnect      mkdir           put             size
append          exit            mls             pwd             status
ascii           form            mode            quit            struct
bell            get             modtime         quote           system
binary          glob            mput            recv            sunique
bye             hash            newer           reget           tenex
case            help            nmap            rstatus         tick
cd              idle            nlist           rhelp           trace
cdup            image           ntrans          rename          type
chmod           lcd             open            reset           user
close           ls              prompt          restart         umask
cr              macdef          passive         rmdir           verbose
delete          mdelete         proxy           runique         ?
ftp> rhelp
214-The following commands are recognized (* =>'s unimplemented):
214-CWD     XCWD    CDUP    XCUP    SMNT*   QUIT    PORT    PASV
214-EPRT    EPSV    ALLO*   RNFR    RNTO    DELE    MDTM    RMD
214-XRMD    MKD     XMKD    PWD     XPWD    SIZE    SYST    HELP
214-NOOP    FEAT    OPTS    AUTH    CCC*    CONF*   ENC*    MIC*
214-PBSZ    PROT    TYPE    STRU    MODE    RETR    STOR    STOU
214-APPE    REST    ABOR    USER    PASS    ACCT*   REIN*   LIST
214 Direct comments to root@localhost.localdomain
ftp> quote CWD ~root
250 CWD command successful
ftp> cd ~root
250 CWD command successful
ftp> bye
221 Goodbye.
Using "help" you see that linux ftp does not know CWD but knows CD (which is translated as CWD ftp-command)
Using "rhelp" , which sends list of known command by the server, you see that it understands ftp-command CWD
Forcing a command to be sent to the server with quote , it works.

So you should use cd

Last edited by nx5000; 01-17-2006 at 11:30 AM.


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