 . 28.6

   

set                  ;

      (.  "set:  -
  "  9).

shift            (.  "shift:   -
 "  9).

test          (.  "test"    ).

times                 
(. man-  times).

trap          (.   "trap:  ").

type        ,        
(.  "if...then"    ).

umask            (.  "umask"   "-
 Linux"  11).

unset           (.  "unset:  "  9).
wait           .



 ,   ,  -
     . ,    
    (RAM),      ,    -
 ,   .  ,    -
 () ,      . , ,
       ,    .

      .bash_profile,   
     .     -
   unset.       -
  .

^^^k       .          
WtSS^^   ,  unset   .   
^   unset       .

      :

_  ()

{


}

-   ,    .    
,     .      -
,    ,      .

      ,  -
 ,    ,   .   -

 28.   Bourne Again Shell                                907