Why I cannot use the 'size' command in FTP?

Question

I made a screen shot of my operation as below on WinXP.As the remotehelp says,the size command should be implemented.But I got a invalid command .How can I fix this problem?

Answer 1

"Invalid command" means that the client doesn't support it. Since the server does, though, you should be able to do something like this:

quote size tags

and if all is well, you'll get a numeric code for the response (should be 213) followed by the filesize.

Answer 2

If SIZE doesn't work there is nothing you can do locally, it's a problem with the ftp server.

However,
tags is usually the name of a directory^(*) and SIZE usually only works on files. So perhaps that's your problem.

(*) In subversion it is customary to organize your project in three top directories called branches, tags and trunk