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getcwd
======

Syntax
------

     #include <unistd.h>
     
     char *getcwd(char *buffer, int max);

Description
-----------

Get the current directory.  The return value includes the drive
specifier.  If BUFFER is `NULL', `getcwd' allocates memory with
`malloc'.  This call fails if more than MAX characters are required to
specify the current directory.

Return Value
------------

The buffer, either BUFFER or a newly-allocated buffer, or `NULL' on
error.

Example
-------

     char *buf = (char *)malloc(PATH_MAX);
     if (buf && getcwd(buf, PATH_MAX))
     {
       printf("cwd is %s\n", buf);
       free(buf);
     }