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+.\" Copyright 2022 Alejandro Colomar <alx@kernel.org>
+.\"
+.\" SPDX-License-Identifier: Linux-man-pages-copyleft
+.\"
+.TH index 3 2024-05-02 "Linux man-pages (unreleased)"
+.SH NAME
+index, rindex \- locate character in string
+.SH LIBRARY
+Standard C library
+.RI ( libc ", " \-lc )
+.SH SYNOPSIS
+.nf
+.B #include <strings.h>
+.P
+.BI "[[deprecated]] char *index(const char *" s ", int " c );
+.BI "[[deprecated]] char *rindex(const char *" s ", int " c );
+.fi
+.SH DESCRIPTION
+.BR index ()
+is identical to
+.BR strchr (3).
+.P
+.BR rindex ()
+is identical to
+.BR strrchr (3).
+.P
+Use
+.BR strchr (3)
+and
+.BR strrchr (3)
+instead of these functions.
+.SH STANDARDS
+None.
+.SH HISTORY
+4.3BSD; marked as LEGACY in POSIX.1-2001.
+Removed in POSIX.1-2008,
+recommending
+.BR strchr (3)
+and
+.BR strrchr (3)
+instead.
+.SH SEE ALSO
+.BR strchr (3),
+.BR strrchr (3)