Use case insensitive variable in ksh shell scripting using sed or awk Post: 302657837

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tolower

TOLOWER(3)						   BSD Library Functions Manual 						TOLOWER(3)

NAME

     tolower, tolower_l -- upper case to lower case letter conversion

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <ctype.h>

     int
     tolower(int c);

     #include <ctype.h>
     #include <xlocale.h>

     int
     tolower_l(int c, locale_t loc);

DESCRIPTION

     The tolower() function converts an upper-case letter to the corresponding lower-case letter.  The argument must be representable as an
     unsigned char or the value of EOF.

     Although the tolower() function uses the current locale, the tolower_l() function may be passed a locale directly. See xlocale(3) for more
     information.

RETURN VALUES

     If the argument is an upper-case letter, the tolower() function returns the corresponding lower-case letter if there is one; otherwise, the
     argument is returned unchanged.

COMPATIBILITY

     The 4.4BSD extension of accepting arguments outside of the range of the unsigned char type in locales with large character sets is considered
     obsolete and may not be supported in future releases.  The towlower() function should be used instead.

SEE ALSO

     ctype(3), islower(3), towlower(3), xlocale(3)

STANDARDS

     The tolower() function conforms to ISO/IEC 9899:1990 (``ISO C90'').

BSD
								   July 17, 2005							       BSD