$ ./zig-out/bin/pidof -h
 USAGE:
     ./zig-out/bin/pidof [OPTIONS] [--] [program]

 OPTIONS:
	-s, --single                      Single shot - this instructs the program to only return one pid.
	-S, --separator STRING            Use separator as a separator put between pids.(default:  )
	-u, --user_only                   Only show process belonging to current user.
	-v, --version                     Print version.
	-h, --help                        Print help message.