cdck --version (return code: 0)
cdck: invalid option -- '-'
Usage: cdck [-d /dev/devname] [-i] [-v] [-p] [-o plot-file.dat]
-d CD/DVD device name, default is /dev/cdrom
-i Print CD/DVD information and quit, perform no timings (default mode)
-t Perform timing test
-p Save data for gnuplot(1) program
-o specify plot file, ./cdck-plot.dat is default
-V Print version
-v Verbose operations
cdck --help (return code: 0)
cdck: invalid option -- '-'
Usage: cdck [-d /dev/devname] [-i] [-v] [-p] [-o plot-file.dat]
-d CD/DVD device name, default is /dev/cdrom
-i Print CD/DVD information and quit, perform no timings (default mode)
-t Perform timing test
-p Save data for gnuplot(1) program
-o specify plot file, ./cdck-plot.dat is default
-V Print version
-v Verbose operations