  ,     -
       ,
  cat.       
 .     -
   ,   cat    .

    cat   
  ,    
.       ( 
   cat,     RETURN),
 cat      . -
  cat    ,  
     
   .

 ,   cat,     -
   cat   RETURN.  
.      RETURN. 
       ,
 cat .          -
     cat.  cat     -
 ,     .     . 7.5.

$ cat
  .

  .

Cat    ,

Cat    ,

    CONTROL-D  

    CONTROL-D  

.

.

<CONTROL+D>

$

. 7.5.  cat        

 cat      ,   
<CONTROL+D>.  <CONTROL+D>   cat  EOF ("end of file"  
),  ,     ,  
 .   <CONTROL+D> cat    
 ,   .



  (redirection)   ,   -
     ,     -
       .    
,          -
      .    

228  II.   Red Hat Linux

. 7.4.  
  -
  ,  -
  -
     