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diff --git a/man3/strstr.3 b/man3/strstr.3 new file mode 100644 index 000000000..bc9f150a9 --- /dev/null +++ b/man3/strstr.3 @@ -0,0 +1,60 @@ +.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) +.\" +.\" 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 +.\" +.\" Since the Linux kernel and libraries are constantly changing, this +.\" manual page may be incorrect or out-of-date.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. +.\" +.\" 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. +.\" +.TH STRSTR 3 1993-04-12 "GNU" "Linux Programmer's Manual" +.SH NAME +strstr \- locate a substring +.SH SYNOPSIS +.nf +.B #include <string.h> +.sp +.BI "char *strstr(const char *" haystack ", const char *" needle ); +.fi +.SH DESCRIPTION +The \fBstrstr()\fP function finds the first occurrence of the substring +\fIneedle\fP in the string \fIhaystack\fP. The terminating `\\0' +characters are not compared. +.SH "RETURN VALUE" +The \fBstrstr()\fP function returns a pointer to the beginning of the +substring, or NULL if the substring is not found. +.SH BUGS +Early versions of Linux libc (like 4.5.26) would not allow +an empty argument. Later versions (like 4.6.27) work correctly, +and return \fIhaystack\fP when \fIneedle\fP is empty. +.SH "CONFORMING TO" +ISO 9899 +.SH "SEE ALSO" +.BR index (3), +.BR memchr (3), +.BR rindex (3), +.BR strchr (3), +.BR strpbrk (3), +.BR strsep (3), +.BR strspn (3), +.BR strtok (3) |