08-08-2001
This probably isn't the shortest answer but here's one way:
Read in the variable and compare it, one at at time, to your groups. In other words, a nested if/else type of thing. But my guess is that you're trying to find a shortcut and have already thought of this method. If you find an answer before someone else gets back to you, please post it!
Also, I know you can do it with C, but just for comparisons sake, you may want to find a way to take your variable to caps or all to lower, (ie. toupper and tolower in C)
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LEARN ABOUT LINUX
toupper
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 3.27 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)