1STRSTR(3P)                 POSIX Programmer's Manual                STRSTR(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

12       strstr - find a substring
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SYNOPSIS

15       #include <string.h>
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17       char *strstr(const char *s1, const char *s2);
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DESCRIPTION

21       The strstr() function shall locate the first occurrence in  the  string
22       pointed  to  by  s1 of the sequence of bytes (excluding the terminating
23       null byte) in the string pointed to by s2.
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RETURN VALUE

26       Upon successful completion, strstr() shall  return  a  pointer  to  the
27       located string or a null pointer if the string is not found.
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29       If  s2  points  to a string with zero length, the function shall return
30       s1.
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ERRORS

33       No errors are defined.
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35       The following sections are informative.
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EXAMPLES

38       None.
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APPLICATION USAGE

41       None.
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RATIONALE

44       None.
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FUTURE DIRECTIONS

47       None.
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SEE ALSO

50       strchr(),  the  Base  Definitions   volume   of   IEEE Std 1003.1-2001,
51       <string.h>
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54       Portions  of  this text are reprinted and reproduced in electronic form
55       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
56       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
57       Specifications Issue 6, Copyright (C) 2001-2003  by  the  Institute  of
58       Electrical  and  Electronics  Engineers, Inc and The Open Group. In the
59       event of any discrepancy between this version and the original IEEE and
60       The  Open Group Standard, the original IEEE and The Open Group Standard
61       is the referee document. The original Standard can be  obtained  online
62       at http://www.opengroup.org/unix/online.html .
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66IEEE/The Open Group                  2003                           STRSTR(3P)
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