hp levels

       HPLIP (HP Linux Imaging and Printing) is an HP developed solution for printing, scanning, and faxing with
       HP inkjet and laser based printers in Linux.

       Copyright (c) 2001-18 HP Development Company, L.P.

       This software comes with ABSOLUTELY NO  WARRANTY.   This  is  free  software,  and  you  are  welcome  to
       distribute it under certain conditions. See COPYING file for more details.

Linux                                                  2.0                                          hp-levels(1)

       Display bar graphs of current supply levels for supported HPLIP printers.

       Run in interactive mode:
              -i or --interactive

       Set the logging level:
              -l<level> or --logging=<level> <level>: none, info*, error, warn, debug (*default)

       Run in debug mode:
              -g (same as option: -ldebug)

       This help information:
              -h or --help

       Bar graph size:
              -s<size> or --size=<size> (current default=51)

       Use colored bar graphs:
              -c or --color (default is colorized)

       Bar graph character:
              -a<char> or --char=<char> (default is '/')

       To specify a device-URI:
              -d<device-uri> or --device=<device-uri>

       To specify a CUPS printer:
              -p<printer> or --printer=<printer>

       The  HPLIP  Launchpad.net  site  https://launchpad.net/hplip  is available to get help, report bugs, make
       suggestions, discuss the HPLIP project or otherwise contact the HPLIP Team.

hp-levels[DEVICE_URI|PRINTER_NAME][MODE][OPTIONS]