Beginning with the iPrint Client v4.15, iprintcmd on Linux was renamed to iprntcmd. The options for iprntcmd on both Linux and Windows are now similar so that they can be used more effectively in login scripts. For more information see, Section 4.5, Using iprntcmd on Linux and Macintosh and Using iprntcmd.exe to Install iPrint Printers.
Beginning in Support Pack 2, the low security iPrint Client for Linux is the default client on the iPrint Printer List Web page instead of the high security client.