The shell expands $0 to the name of the calling program (sobell, page 474), $1–$n to the individual command-line arguments (positional parameters; sobell, page 475), $* (sobell, page 478) to all positional parameters, and $# (sobell, page 479) to the number of positional parameters. write a script named all that displays (sends to standard output) the name of the calling program, the number of positional parameters, and a list of positional parameters. remember to make the file executable (sobell, page 100). test the script with 0, 1, and 5 positional parameters. what does the script print out in each of the cases?