Within Labview you could use the Tcp Connection VIs. Simply send username, passwort and your "quote something" command. As long as you don't have to read from the connection, this shouldn't be too much of a problem.
The question which should concern you more is: Does the server support the command? If no, you could still write a small TCP Server and a small TCP Client (in LabView or your language of choice).
The example finder offers you "TCP Communicator (Active)" and "TCP Communicator (Passive)". I haven't further investigated this, but maybe you could use those as a starting point for a program without having to use FTP.