+++ /dev/null
-.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
-.\"
-.\" %%%LICENSE_START(VERBATIM)
-.\" Permission is granted to make and distribute verbatim copies of this
-.\" manual provided the copyright notice and this permission notice are
-.\" preserved on all copies.
-.\"
-.\" Permission is granted to copy and distribute modified versions of this
-.\" manual under the conditions for verbatim copying, provided that the
-.\" entire resulting derived work is distributed under the terms of a
-.\" permission notice identical to this one.
-.\"
-.\" Since the Linux kernel and libraries are constantly changing, this
-.\" manual page may be incorrect or out-of-date. The author(s) assume no
-.\" responsibility for errors or omissions, or for damages resulting from
-.\" the use of the information contained herein. The author(s) may not
-.\" have taken the same level of care in the production of this manual,
-.\" which is licensed free of charge, as they might when working
-.\" professionally.
-.\"
-.\" Formatted or processed versions of this manual, if unaccompanied by
-.\" the source, must acknowledge the copyright and authors of this work.
-.\" %%%LICENSE_END
-.\"
-.\" References consulted:
-.\" Linux libc source code
-.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
-.\" 386BSD man pages
-.\" Modified Sat Jul 24 17:56:43 1993 by Rik Faith (faith@cs.unc.edu)
-.\" Added history, aeb, 980113.
-.\" 2005-05-05 mtk: added strcasestr()
-.\"
-.TH STRSTR 3 2015-01-10 "GNU" "Linux Programmer's Manual"
-.SH NAME
-strstr, strcasestr \- locate a substring
-.SH SYNOPSIS
-.nf
-.B #include <string.h>
-.sp
-.BI "char *strstr(const char *" haystack ", const char *" needle );
-.sp
-.BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */"
-.sp
-.B #include <string.h>
-.sp
-.BI "char *strcasestr(const char *" haystack ", const char *" needle );
-.fi
-.SH DESCRIPTION
-The
-.BR strstr ()
-function finds the first occurrence of the substring
-.I needle
-in the string
-.IR haystack .
-The terminating null bytes (\(aq\\0\(aq) are not compared.
-
-The
-.BR strcasestr ()
-function is like
-.BR strstr (),
-but ignores the case of both arguments.
-.SH RETURN VALUE
-These functions return a pointer to the beginning of the
-located substring, or NULL if the substring is not found.
-.SH ATTRIBUTES
-.SS Multithreading (see pthreads(7))
-The
-.BR strstr ()
-function is thread-safe.
-.LP
-The
-.BR strcasestr ()
-function is thread-safe with exceptions.
-It can be safely used in multithreaded applications, as long as
-.BR setlocale (3)
-is not called to change the locale during its execution.
-.SH CONFORMING TO
-The
-.BR strstr ()
-function conforms to C89 and C99.
-The
-.BR strcasestr ()
-function is a nonstandard extension.
-.\" .SH BUGS
-.\" Early versions of Linux libc (like 4.5.26) would not allow
-.\" an empty
-.\" .I needle
-.\" argument for
-.\" .BR strstr ().
-.\" Later versions (like 4.6.27) work correctly,
-.\" and return
-.\" .IR haystack
-.\" when
-.\" .I needle
-.\" is empty.
-.SH SEE ALSO
-.BR index (3),
-.BR memchr (3),
-.BR memmem (3),
-.BR rindex (3),
-.BR strcasecmp (3),
-.BR strchr (3),
-.BR string (3),
-.BR strpbrk (3),
-.BR strsep (3),
-.BR strspn (3),
-.BR strtok (3),
-.BR wcsstr (3)
-.SH COLOPHON
-This page is part of release 3.79 of the Linux
-.I man-pages
-project.
-A description of the project,
-information about reporting bugs,
-and the latest version of this page,
-can be found at
-\%http://www.kernel.org/doc/man\-pages/.
OSDN Git Service
