  /    ,     
  ,    ,    
.    ,       -
   .

  

   (>)  -
      -
 ,     (. 7.6).  -
 ,   , :

 [] >  

      (,
   ),   -
 ,  _    ,
     .

 . 7.7     -
  cat.     . 7.3,
   ,     
  .  . 7.7   

  .       
,     cat     sample, txt, -
   .

$ cat > sample.txt

    .

Cat    .

 CONTROL-D  

 .

<CONTROL+D>

$

. 7.7.  cat   

  sample, txt    .     -
  cat   sample, txt.      
     cat.

     I.    -
    .    ,  -
     .    
 "     II"    .

 . 7.7 ,      cat 
     .     , 
     RETURN     .
           . 
      .

 7.  I: Bourne Again Shell 229

. 7.6. 
 