Please write clear. Class is practical unix and programming.

1. Write a bash script named triangletype that expects three positive whole numbers on the command line, in increasing order. In other words, it should be called like this

$ triangletype 3 12 15

The script checks rst of all that there are three numbers and that they are all positive, and increasing in value. If either of these conditions is false, it displays a usage message and exits. Suppose we call the entered numbers a, b, and c, in that order. If the user has entered valid numbers, the script determines whether :

the numbers are not the sides of a triangle ( a + b c)

the numbers are the sides of an obtuse triangle (a + b > c and a2 + b 2 < c2 )

the numbers are the sides of a right triangle, or (a + b > c and a2 + b 2 = c 2 )

the numbers are the sides of an acute triangle (a + b > c and a2 + b 2 > c2 )

Exactly one of these conditions must be true. The script should display a message stating which is true. The message should be at most one line long and should include the numbers and indicate what is true about them.

For example:

$ triangletype 3 4 5

3, 4, and 5 are the sides of a right triangle