xfsdump --VERSION (return code: 0)
xfsdump:inventory: INV: invalid sub-option ON for -I option
xfsdump: Dump Status: SUCCESS
xfsdump --help (return code: 0)
xfsdump: version 3.1.6 (dump format 3.0)
xfsdump: usage: xfsdump [ -a (dump DMF dualstate files as offline) ]
[ -b <blocksize> ]
[ -c <media change alert program> ]
[ -d <dump media file size> ]
[ -e (allow files to be excluded) ]
[ -f <destination> ... ]
[ -h (help) ]
[ -l <level> ]
[ -m (force usage of minimal rmt) ]
[ -o (overwrite tape) ]
[ -p <seconds between progress reports> ]
[ -q <use QIC tape settings> ]
[ -s <subtree> ... ]
[ -t <file> (use file mtime for dump time ]
[ -v <verbosity {silent, verbose, trace}> ]
[ -z <maximum file size> ]
[ -A (don't dump extended file attributes) ]
[ -B <base dump session id> ]
[ -D (skip unchanged directories) ]
[ -E (pre-erase media) ]
[ -F (don't prompt) ]
[ -I (display dump inventory) ]
[ -J (inhibit inventory update) ]
[ -K (generate format 2 dump) ]
[ -L <session label> ]
[ -M <media label> ... ]
[ -O <options file> ]
[ -R (resume) ]
[ -T (don't timeout dialogs) ]
[ -Y <I/O buffer ring length> ]
[ - (stdout) ]
[ <source (mntpnt|device)> ]