PROLOG¶

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

NAME¶

link — call link() function

SYNOPSIS¶

link file1 file2

DESCRIPTION¶

The link utility shall perform the function call:

link(file1, file2);

A user may need appropriate privileges to invoke the link utility.

OPTIONS¶

None.

OPERANDS¶

The following operands shall be supported:

file1

The pathname of an existing file.

file2

The pathname of the new directory entry to be created.

STDIN¶

Not used.

INPUT FILES¶

Not used.

ENVIRONMENT VARIABLES¶

The following environment variables shall affect the execution of link:

LANG

Provide a default value for the internationalization variables that are unset or null. (See the Base Definitions volume of POSIX.1‐2017, Section 8.2, Internationalization Variables for the precedence of internationalization variables used to determine the values of locale categories.)

LC_ALL

If set to a non-empty string value, override the values of all the other internationalization variables.

LC_CTYPE

Determine the locale for the interpretation of sequences of bytes of text data as characters (for example, single-byte as opposed to multi-byte characters in arguments).

LC_MESSAGES

Determine the locale that should be used to affect the format and contents of diagnostic messages written to standard error.

NLSPATH

Determine the location of message catalogs for the processing of LC_MESSAGES.

ASYNCHRONOUS EVENTS¶

Default.

STDOUT¶

None.

STDERR¶

The standard error shall be used only for diagnostic messages.

OUTPUT FILES¶

None.

EXTENDED DESCRIPTION¶

None.

EXIT STATUS¶

The following exit values shall be returned:

 0

Successful completion.

>0

An error occurred.

CONSEQUENCES OF ERRORS¶

Default.

The following sections are informative.

APPLICATION USAGE¶

None.

EXAMPLES¶

None.

RATIONALE¶

None.

FUTURE DIRECTIONS¶

None.

SEE ALSO¶

ln, unlink

The Base Definitions volume of POSIX.1‐2017, Chapter 8, Environment Variables

The System Interfaces volume of POSIX.1‐2017, link()

COPYRIGHT¶

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .