Section: POSIX Programmer's Manual (3P)
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.
--- change working directory
int chdir(const char *path);
function shall cause the directory named by the pathname pointed to
argument to become the current working directory; that is, the starting
point for path searches for pathnames not beginning with
Upon successful completion, 0 shall be returned. Otherwise, -1 shall
be returned, the current working directory shall remain unchanged, and
shall be set to indicate the error.
function shall fail if:
Search permission is denied for any component of the pathname.
A loop exists in symbolic links encountered during resolution of the
The length of a component of a pathname is longer than
A component of
does not name an existing directory or
is an empty string.
A component of the pathname names an existing file that is neither
a directory nor a symbolic link to a directory.
function may fail if:
symbolic links were encountered during resolution of the
The length of a pathname exceeds
or pathname resolution of a symbolic link produced an intermediate
result with a length that exceeds
The following sections are informative.
Changing the Current Working Directory
The following example makes the value pointed to by
the current working directory.
char *directory = "/tmp";
ret = chdir (directory);
function only affects the working directory of the current process.
The Base Definitions volume of POSIX.1-2008,
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, Copyright (C) 2013 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group.
(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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
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