Using cal in a script

ETC Homework & Coursework Questions
1

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!

  1. The problem statement, all variables and given/known data:

Write a shell script that will:
"Display" the number of days in the current month. For example: September 1996 has 30 days

  1. Relevant commands, code, scripts, algorithms:

We are supposed to use "cal"

  1. The attempts at a solution (include all code and scripts):

I have started with:
cal | head -n 1
to get the month as the first part of the sentence. I need to figure out how to do a word count of the cal output and subtract 9 with bc to get the number of days.

  1. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
    Pima Community College, Tucson AZ, USA, Barry Tucker, CIS 137

Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).

2

The first line only has the month and year, you'd want tail to get the last lines, yes? -n 1 or -n 2 for the last little bit.