sed ignoring case for search but respecting case for subtitute Post: 302450341

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strncasecmp

STRCASECMP(3P)						     POSIX Programmer's Manual						    STRCASECMP(3P)

PROLOG

       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAME

       strcasecmp, strncasecmp - case-insensitive string comparisons

SYNOPSIS

       #include <strings.h>

       int strcasecmp(const char *s1, const char *s2);
       int strncasecmp(const char *s1, const char *s2, size_t n);

DESCRIPTION

       The strcasecmp() function shall compare, while ignoring differences in case, the string pointed to by s1 to the string pointed  to  by  s2.
       The strncasecmp() function shall compare, while ignoring differences in case, not more than n bytes from the string pointed to by s1 to the
       string pointed to by s2.

       In the POSIX locale, strcasecmp() and strncasecmp() shall behave as if the strings had been converted to lowercase and then a byte compari-
       son performed. The results are unspecified in other locales.

RETURN VALUE

       Upon  completion,  strcasecmp() shall return an integer greater than, equal to, or less than 0, if the string pointed to by s1 is, ignoring
       case, greater than, equal to, or less than the string pointed to by s2, respectively.

       Upon successful completion, strncasecmp() shall return an integer greater than, equal to, or less than 0, if the  possibly  null-terminated
       array pointed to by s1 is, ignoring case, greater than, equal to, or less than the possibly null-terminated array pointed to by s2, respec-
       tively.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       The Base Definitions volume of IEEE Std 1003.1-2001, <strings.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and  the  original  IEEE
       and  The  Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
       online at http://www.opengroup.org/unix/online.html .

IEEE
/The Open Group						       2003							    STRCASECMP(3P)