Unix Tip #4348- February 5, 2014


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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!


NOTE: All tips provided are USE AT YOUR OWN RISK. Tips are submitted by various unix admins around the globe. UGU suggest you read and test each tip in a non-volitile environment before placing into production.


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