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chdir(2)							     chdir(2)



NAME

  chdir, fchdir	- Changes the current directory

SYNOPSIS

  #include <&lt;unistd.h>&gt;

  int chdir (
	  const	char *path );

  int fchdir (
	  int filedes );


STANDARDS

  Interfaces documented	on this	reference page conform to industry standards
  as follows:

  chdir():  XSH5.0

  fchdir():  XSH5.0

  Refer	to the standards(5) reference page for more information	about indus-
  try standards	and associated tags.

PARAMETERS

  path
      Points to	the pathname of	the directory.

  filedes
      Specifies	the file descriptor of the directory.

DESCRIPTION

  The chdir() function changes the current directory to	the directory indi-
  cated	by the path parameter.

  The fchdir() function	changes	the current directory to the directory indi-
  cated	by the filedes parameter.  If the path parameter refers	to a symbolic
  link,	thechdir() function sets the current directory to the directory
  pointed to by	the symbolic link.

  The current directory, also called the current working directory, is the
  starting point of searches for pathnames that	do not begin with a /
  (slash).   In	order for a directory to become	the current directory, the
  calling process must have search access to the directory.




NOTES

  The current working directory	is shared between all threads within the same
  process.  Therefore, one thread using	the chdir() or fchdir()	functions
  will affect every other thread in that process.

RETURN VALUES

  Upon successful completion, the chdir() function returns a value of 0
  (zero).  Otherwise, a	value of -1 is returned	and errno is set to indicate
  the error.

ERRORS

  If the chdir() function fails, the current directory remains unchanged and
  errno	may be set to one of the following values:

  [EACCES]
      Search access is denied for any component	of the pathname.

  [EFAULT]
      The path parameter points	outside	the process's allocated	address
      space.

  [EIO]
      An I/O error occurred while reading from or writing to the file system.

  [ELOOP]
      Too many symbolic	links were encountered in translating the pathname.

  [ENAMETOOLONG]
      The length of the	path argument exceeds PATH_MAX or a pathname com-
      ponent is	longer than NAME_MAX.

      Pathname resolution of a symbolic	link produced an intermediate result
      whose length exceeds PATH_MAX.

  [ENOENT]
      The named	directory does not exist, or is	an empty string.

  [ENOTDIR]
      A	component of the path prefix is	not a directory.

  If the fchdir() function fails, the current directory	remains	unchanged and
  errno	may be set to one of the following values:

  [EBADF]
      The filedes parameter is not a valid open	file descriptor.

  [ENOTDIR]
      The file descriptor does not reference a directory.

RELATED	INFORMATION

  Functions: chroot(2)

  Commands: cd(1)

  Standards: standards(5)