Calculating with bc

UNIX even offers a handy calculator utility that lets you…er, um…calculate things. Just use bc, as shown in Code Listing 15.3.

To calculate with bc:

1.	bc At the shell prompt, type bc. You'll find yourself at a blank line, waiting for math to do.
2.	6*5 Enter the numbers, operators, expressions, or whatever you want to calculate. Use + to add, - to subtract, * to multiply, and / to divide. The answer appears on the next line (Code Listing 15.3).
3.	Quit bc when you're done.

Code Listing 15.3. Using the bc utility, you can calculate and calculate and calculate….

xmission> bc
6*5
30
xmission>

Table 15.1. ispell menu items

Item	Description
	Accept your spelling, but don't add it to the dictionary.
r	Replace with a word that you'll specify (after you type r).
A	Accept the word for the rest of the current session.
i	Insert the word into your dictionary.
u	Insert the word (as all lowercase) into your dictionary.
q	Quit ispell, saving all changes.
x	Exit ispell without saving any changes.
0-n	Replace highlighted word with a suggested word.