SCSU help

Hi All,
I have written a script to do ftp.

 
#!/bin/sh

cd /data/mgr/
HOST='xyz'
ftp -nv $HOST <<"EOT"
quote user abc
quote pass abc
prompt
cd /sdata
mget PQR.TXT
bye
EOT

but the problem is i do not have permission to copy the file in target folder. I need to use SCSU to login as other user. But while giving scsu... it prompts for password and reason.
How can i write pwd and reason in my script, so that it should not prompt me for PWD and reason?

---------- Post updated at 05:26 PM ---------- Previous update was at 05:17 PM ----------

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also, in source, i have hundresds of TXT files... out of it i want to get only selected 10 .TXT files. problem is there is not a single thing which matches between these files.... So i have to write 10 times FTP command in script... is there any otherway to achive this by using only one FTP command and get all 10 files.