Project $1-4$

In this project, you use the cal command to display the current calendar, a Julian date calendar, and the historical calendar for July $1776.$

To use the cal command:

$1.$ Type cal in the command line, and press Enter. What calendar do you see?

$2.$ Type cal $-$j $2009$ in the command line, and press Enter. What type of calendar appears?

$3.$ To determine the day of the week when the Declaration of Independence was signed, type cal $71776$ in the command line, and press Enter. You should see a calendar similar to the one in Figure $1-14.$ In this case, the month and year are the command arguments.