chdir - change current working directory
int chdir(const char *path)
Path is the pathname of a directory. Chdir causes this directory to
become the current working directory, the starting point for path names
not beginning with ``/''.
In order for a directory to become the current directory, a process must
have execute (search) access to the directory.
Upon successful completion, a value of 0 is returned. Otherwise, a value
of -1 is returned and errno is set to indicate the error.
Chdir will fail and the current working directory will be unchanged if
one or more of the following are true:
[ENOTDIR] A component of the path prefix is not a directory.
[ENAMETOOLONG] The path name exceeds PATH_MAX characters.
[ENOENT] The named directory does not exist.
[ELOOP] Too many symbolic links were encountered in translating
the pathname. (Minix-vmd)
[EACCES] Search permission is denied for any component of the path
[EFAULT] Path points outside the process's allocated address space.
[EIO] An I/O error occurred while reading from or writing to the