cdstop --VERSION (return code: 0)
cdstop: invalid option -- '-'
cdstop CDTOOL 2.1.8 (c) 1994-2004 Thomas Insel, et al. Licensed under GPL.
cdstop -HELP (return code: 1)
cdstop: invalid option -- '-'
cdstop: invalid option -- 'e'
cdstop: invalid option -- 'l'
cdstop: option requires an argument -- 'p'
CDTOOL 2.1.8 (c) 1994-2004 Thomas Insel, et al. Licensed under GPL.
usage: cdstop [options]
-V build, version, and this help
-? -h print this message
-[0-9] use device /dev/cdrom[0-9]
-d dev use device dev
-D enable debugging information