UNIX for Dummies Questions & Answers

i'm supposed to come up with a script that

-accepts a directory as an optional command line parameter

-clears the screen

-displays an error message and terminates if more than one parameter is provided

-use the current directory if no parameter is provided

-display an error message and terminates if the provided parameter is not a directory

-for the directory to be processes, displays a single line of information about each regular file within it: file name, file size, file owner (in that order). For any file that is zero bytes in length, the script is to offer to delete the file, accepting only y/n responses and then proceeding accordingly.

-contains appropriate documentation and error checking

the bolded text is where i'm having trouble. i know i'm supposed to be using
if test -s $1 or something like that i'm just not sure what to do next.

This sounds very much like a class assignment. Homework is not allowed on the Forums