ftpの接続をコマンドライン(curl)でテストする

curl -u <user>:<password> ftp://<host>/aaa

-vすれば詳しくログも出してくれる

$ curl -v -u user:pass ftp://localhost//usr/local/src/
* About to connect() to localhost port 21 (#0)
*   Trying ::1... 接続を拒否されました
*   Trying 127.0.0.1... connected
* Connected to localhost (127.0.0.1) port 21 (#0)
< 220 (vsFTPd 2.2.2)
> USER 
< 331 Please specify the password.
> PASS 
< 230 Login successful.
> PWD
< 257 "/home/user"

<snip>

> QUIT
< 221 Goodbye.
* Closing connection #0