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strnicmp(9) [centos man page]

STRNICMP(9)						     Basic C Library Functions						       STRNICMP(9)

strnicmp - Case insensitive, length-limited string comparison SYNOPSIS
int strnicmp(const char * s1, const char * s2, size_t len); ARGUMENTS
s1 One string s2 The other string len the maximum number of characters to compare COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 STRNICMP(9)

Check Out this Related Man Page

STRCMP(3)						   BSD Library Functions Manual 						 STRCMP(3)

strcmp, strncmp -- compare strings LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <string.h> int strcmp(const char *s1, const char *s2); int strncmp(const char *s1, const char *s2, size_t len); DESCRIPTION
The strcmp() and strncmp() functions lexicographically compare the nul-terminated strings s1 and s2. RETURN VALUES
The strcmp() and strncmp() return an integer greater than, equal to, or less than 0, according to whether the string s1 is greater than, equal to, or less than the string s2. The comparison is done using unsigned characters, so that '200' is greater than ''. The strncmp() compares not more than len characters. SEE ALSO
bcmp(3), memcmp(3), strcasecmp(3), strcoll(3), strxfrm(3) STANDARDS
The strcmp() and strncmp() functions conform to ANSI X3.159-1989 (``ANSI C89''). NOTES
If len is zero strncmp() returns always 0. BSD
June 4, 1993 BSD
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