boot loader (  ).   ,  -
           -
     . .  "
 "  15.

bootstrap ( ).       -
        .   
.

Bourne Again Shell, bash. GNU-   UNIX,   -
 POSIX     Bourne Shell     -
    Shell. Bourne Again Shell   

   emacs,  ,     -
. TOLDOC

Bourne Shell, sh.    UNIX.    (Steve Bourne) 
AT&T Bell Laboratories. . .

brace ( ).  ({)   ())  . 
     .

bracket ( ). .  .  bracket   -
,   .

branch ().      ,   . 
   Linux      .   
   .     ,   SCCS
 RCS,      ,      
  .

bridge ().     ,     
 2 ( )    Internet.

broadcast ().     .  Ethernet
       , 
  , ,      -
  .       -
 ,    Ethernet  IP.    -
     (    ).

broadcast address ( ).     ( 255),
       .

broadcast network ( ).  ,  Ethernet,   -
        ,    -
  .

BSD. . Berkeley UNIX.

buffer ().  ,       .  -
      Linux      ,   
              -
.

bug ().   ,   ,
 ,      .toLDOC

builtin (command) ( ). ,   .   
   Bourne Again Shell, TC Shell  Z Shell    
  . .  " "  7.

byte ().     ,      ;

           
 .     .FOLDOC

966                                                         VII. 