unpaper --version (return code: 0)
6.1
unpaper --help (return code: 0)
unpaper 6.1
License GPLv2: GNU GPL version 2.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Usage: unpaper [options] <input-file(s)> <output-file(s)>
Filenames may contain a formatting placeholder starting with '%%' to insert a
page counter for multi-page processing. E.g.: 'scan%%03d.pbm' to process files
scan001.pbm, scan002.pbm, scan003.pbm etc.
See 'man unpaper' for options details
Report bugs at https://github.com/Flameeyes/unpaper/issues