PFT is a command line tool to directly communicate with network printers via the Printer Job Language (PJL) using port 9100. Features include full file system access (if installed on printer), environment variable “tuning” and setting of display messages. Platform: Windows and UNIX
You can download it from the following link: https://packetstormsecurity.com/files/download/26558/libPJL-1.2-src.tgz
Source: https://packetstormsecurity.com/files/26558/libPJL-1.2-src.tgz.html