Project 3

Project 3

This project tests your ability to

work with command line arguments;
work with text stream I/O methods;
use different methods of Array object.

Please write a script named tail.js that:

takes a file name as an argument from the command line (this is a required argument);
another argument (optional) is to be in the form: -n <integer number>;
reads the specified file;
prints a number of the last lines from the file;
the number of lines to print is either 10 (the default value) or the number assigned by the other argument.

Additional requirements are:

the order of arguments is not fixed; that is, a user can run the script as
```
c:> cscript data.txt -n 8
```
or as
```
c:> wscript -n 15 data.txt
```
before opening the file the script should check if the file with the given name exists and readable (for this check the attributes of the file);
use method WScript.Echo() to print all the lines.

This project is due by 11:59pm on Monday, April 5, 2004.