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Full Discussion: awk case-insensitive
Top Forums Shell Programming and Scripting awk case-insensitive Post 302088654 by ranj@chn on Wednesday 13th of September 2006 04:49:59 PM
Old 09-13-2006
tolower/toupper

Why not use the functions tolower()/toupper() functions in awk. That might help you.
 

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TOUPPER(3)						     Linux Programmer's Manual							TOUPPER(3)

NAME
toupper, tolower - convert letter to upper or lower case SYNOPSIS
#include <ctype.h> int toupper(int c); int tolower(int c); DESCRIPTION
toupper() converts the letter c to upper case, if possible. tolower() converts the letter c to lower case, if possible. If c is not an unsigned char value, or EOF, the behavior of these functions is undefined. RETURN VALUE
The value returned is that of the converted letter, or c if the conversion was not possible. CONFORMING TO
C89, C99, 4.3BSD. BUGS
The details of what constitutes an uppercase or lowercase letter depend on the current locale. For example, the default "C" locale does not know about umlauts, so no conversion is done for them. In some non-English locales, there are lowercase letters with no corresponding uppercase equivalent; the German sharp s is one example. SEE ALSO
isalpha(3), setlocale(3), towlower(3), towupper(3), locale(7) COLOPHON
This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU
1993-04-04 TOUPPER(3)
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