       : 3
   -- .
    3.

       :

   ,   in     .
    select      $@.

 Here

 Here       
  .  Here  ,    
" " (here)     ,   " ", -
,   .

 , birthday,   Here.   ""
()     ,     Here. 
  ,     Here,   
""       +.    -
   ,      -
  .         
 .      ,    
    ,        :

$ cat birthday
 -i "$1" +
Alex June 22
Barbara February 3
Darlene May 8
Helen March 13
Jenny January 23
Nancy June 26
+

$ birthday Jenny
Jenny January 23
$ birthday June
Alex June 22
Nancy June 26

   birthday      Here, -
 ,    .      
birthday      (Jenny),       -
 Jenny.    ,      .

   bundle    
.  bundle3    ,   -
  (shar).  bundle  ,    
,    ,      -
 .

3  .  (W. Kemighan)    (Rob Pike), UNIX.  
(The Unix Programming Environment}.    .

896                                                  VI. 