The script will then count down the number of command line arguments that are left, printing one per second to the screen reporting how many command line arguments are left. (use the shift builtin in a loop). So the screen would do a countdown 6 5 4 3 2 1 (if I had entered 6 six command line arguments).

Assume that there is a 4% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on three independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?