[olug] Unix Tip: BC AND NOT BEFORE AD

[Unix Guru Universe]

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			      UNIX GURU UNIVERSE 
			         UNIX HOT TIP

			Unix Tip 1900 - March 15, 2003

		    http://www.ugu.com/sui/ugu/show?tip.today

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BC AND NOT BEFORE AD

Fire up our old friend and often forgotten bc.  

% bc

Enter your arthimetic expression

20+20

Will return 

40

but the best part is, use the 
"obase" and "ibase" commands for all 
your conversion needs.

For example, type: 

obase=16 

then type: 

255

This will output "FF".   

Next, if you type:

obase=2 

Then a dot (or period), it stands for 
"the last number") 

It will return "11111111", that's 255 in binary!

If you need hex to dec, 
just type "ibase=16" and "obase=10"

Have fun!



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