utmpdump --version (return code: 0)
utmpdump from util-linux 2.27.1
utmpdump --help (return code: 0)
Usage:
utmpdump [options] [filename]
Dump UTMP and WTMP files in raw format.
Options:
-f, --follow output appended data as the file grows
-r, --reverse write back dumped data into utmp file
-o, --output <file> write to file instead of standard output
-h, --help display this help and exit
-V, --version output version information and exit
For more details see utmpdump(1).