[SunHELP] How to substract hexadecimal numbers in sh script

[DAUBIGNE Sebastien - BOR]

> echo "upper" | tr '[a-z]'  '[A-Z]'
UPPER
---
Sebastien DAUBIGNE=20
sebastien.daubigne at sema.fr <mailto:sebastien.daubigne at sema.fr>  - (+33)
(0)5.57.26.56.36
Sema Global Services - AFM/DW/Pessac

	-----Message d'origine-----
	De:	Gurcan ERIM [SMTP:gurcanerim at excite.com]
	Date:	jeudi 4 octobre 2001 11:14
	=C0:	sunhelp at sunhelp.org
	Objet:	[SunHELP] How to substract hexadecimal numbers in sh script

	Hi,

	I need to substract to hexadecimal numbers. I can do this with bc
but it
	looks for uppercase letters. (A,B,C,D,E,F) but my source file has
numbers
	with lowercase.=20

	Is it possible to implement lowercase letters as hexadecimal?
	Or
	How can i change lowercase to upper, any practical suggest, like
using sed,
	awk, or printf etc.?

	Thanks.

	G=FCrcan





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