xqxdecode version (return code: 0)
EOF on file reading header.
xqxdecode --help (return code: 1)
xqxdecode: invalid option -- '-'
Usage:
xqxdecode [options] < zjs-file
Decode a XQX stream into human readable form.
A XQX stream is the printer language used by some HP LaserJet
printers, such as the HP LaserJet M1005 (MFP).
Options:
-d basename Basename of .pbm file for saving decompressed planes
-o Print file offsets
-h Print hex file offsets
-D lvl Set Debug level [0]