FTP部分指令无法显示

[playboy03021]

问题如下：使用pwd和登录都正常，但是使用get或者ls指令显示成功，但是卡在那里无结果，求高手指点（这个文件夹下只有一个文件）
graceh@graceh:~/Test$ ftp 192.168.0.168
Connected to 192.168.0.168.
220 wdbjcuuas2 FTP server ready.
Name (192.168.0.168:graceh): els
331 Password required for els.
Password:
230 User els logged in.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> cd WORK
250-Please read the file README
250- it was last modified on Tue Sep 6 11:40:10 2011 - 295 days ago
250 CWD command successful.
ftp> cd moshell2
250 CWD command successful.
ftp> cd moshell
250-Please read the file README
250- it was last modified on Thu Apr 5 14:17:01 2012 - 83 days ago
250 CWD command successful.
ftp> pwd
257 "/home/els/WORK/moshell2/moshell" is current directory.
ftp> cd sitefiles
250 CWD command successful.
ftp> pwd
257 "/home/els/WORK/moshell2/moshell/sitefiles" is current directory.
ftp> ls
200 PORT command successful.