dump-utmp version (return code: 0)
couldn't open file 'version': No such file or directory
dump-utmp --help (return code: 1)
Usage: dump-utmp [-hrR] [-n <recs>] <files>
[--num <recs>] [--raw] [--reverse] [--help]
The system's default login accounting file is /var/log/wtmp.