$ cat memo

 !

   6 

     .

   - 

?


$  '' memo

     .

. 5.4.     

     ,       -
.      man-     -
 .

head:   

 head     .     ,
   .      months,  12 
  ,    ,  head       (. 5.5).

$ cat months



Map










$ head months




Map








. 5.5.  head    
160                                            II.   Red Hat Linux