zsyncmake --VERSION (return code: 0)
zsyncmake: invalid option -- '-'
zsync v0.6.2 (zsyncmake compiled Mar 13 2017 07:21:15)
By Colin Phipps <cph@moria.org.uk>
Published under the Artistic License v2, see the COPYING file for details.
zsyncmake -HELP (return code: 2)
zsyncmake: invalid option -- '-'
zsyncmake: invalid option -- 'h'
zsyncmake: invalid option -- 'l'
zsyncmake: invalid option -- 'p'
fread: Operation not permitted