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PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
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CHDIR(3P) POSIX Programmer's Manual CHDIR(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.
chdir — change working directory
#include <unistd.h>
int chdir(const char *path);
The chdir() function shall cause the directory named by the
pathname pointed to by the path 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 errno shall be set to indicate the error.
The chdir() function shall fail if:
EACCES Search permission is denied for any component of the
pathname.
ELOOP A loop exists in symbolic links encountered during
resolution of the path argument.
ENAMETOOLONG
The length of a component of a pathname is longer than
{NAME_MAX}.
ENOENT A component of path does not name an existing directory or
path is an empty string.
ENOTDIR
A component of the pathname names an existing file that is
neither a directory nor a symbolic link to a directory.
The chdir() function may fail if:
ELOOP More than {SYMLOOP_MAX} symbolic links were encountered
during resolution of the path argument.
ENAMETOOLONG
The length of a pathname exceeds {PATH_MAX}, or pathname
resolution of a symbolic link produced an intermediate
result with a length that exceeds {PATH_MAX}.
The following sections are informative.
Changing the Current Working Directory
The following example makes the value pointed to by directory,
/tmp, the current working directory.
#include <unistd.h>
...
char *directory = "/tmp";
int ret;
ret = chdir (directory);
None.
The chdir() function only affects the working directory of the
current process.
None.
getcwd(3p)
The Base Definitions volume of POSIX.1‐2017, unistd.h(0p)
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 .
IEEE/The Open Group 2017 CHDIR(3P)
Pages that refer to this page: cd(1p), fchdir(3p)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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