I think you can't give access ftp user can run this 2 commands.
If you are doing ftp from windows to unix and the ftp contents are same then right a batch file in dos "myftp.bat" make it myftp.exe and run from windows.
"man ftpd" (or any number of threads in this forum) will explain how to arrange a "guest" account which will limit access to a particular directory tree. Options in the "ftpaccess" file can be used to stop some operations. You can set the permissions on a directory to stop an FTP user from _seeing_ any of the files on the server, but that wouldn't prevent a download if he knew the file name.
Other FTP servers exist, and these may offer other possibilities.
Many things are possible, but not always exactly what you'd like. It might help if you specified exactly what you'd like to allow and what you'd like to prevent, instead of specifying exactly _how_ you'd like to do it.
To limit an ftp user to only those two commands would be a bit difficult.
What you can do is limit where they can go by setting them up as a 'chroot' account. That way they can only cd within 'their' account. The ftp protocol gives them put/get, so keep their directory clean of files you don't want them to access.
You can do a search here on how to set 'chroot' up.
