-///
-string const getcwd();
-///
-int chdir(string const & name);
-/// Returns false if it fails
-bool rename(string const & from, string const & to);
-/// Returns false it it fails
-bool copy(string const & from, string const & to);
-/// generates a checksum
-unsigned long sum(string const & file);
-/// returns a date string (not used currently)
-char * date();
-/// returns the name of the user (not used currently)
-string const getUserName();
-///