+--- Test for file access permission on given path.
+-- @class function
+-- @name access
+-- @param str String value containing the path
+-- @return Number containing the return code, 0 on sucess or nil on error
+-- @return String containing the error description (if any)
+-- @return Number containing the os specific errno (if any)
+access = posix.access
+
+--- Evaluate given shell glob pattern and return a table containing all matching
+-- file and directory entries.
+-- @class function
+-- @name glob
+-- @param filename String containing the path of the file to read
+-- @return Table containing file and directory entries or nil if no matches
+-- @return String containing the error description (if no matches)
+-- @return Number containing the os specific errno (if no matches)