    ,   . .  "-
   "  6.

filename ( ).  .     .
filename completion (  ).    
   .

filename extension ( () ).   ,   .

filename generation (  ).    -
   . .    .

filesystem ( ).  ,     .
  Linux-    ,     
     .      -
.  ,     ,  
.       ,   -
,      .   
   ,     -
 ,   ,    .

filling ().   ,     
,       .

filter (). ,        -
     .     
     .      
   ,      
    .      -
   sort.

firewall ().        ,
    .     
 ,   ,     -
 , -   .   -
,      Internet   -
 Web-    .     -
     .
        ,   
 ,    .
.  -.

focus, desktop (   ).     .   
      .   ,   
.

footer ().  ,   . .  .

foreground process ( ).      -
     ,    
.     ,  
 .     ,    -
      . .  . .  -
 .

fork ().  .    . .  .
FQDN.     (Fully Qualified Domain Name). 
 ,        ,   
 .   ,    gethostbyname (2)
 ,    gethostname (2). , speedy    ,

974                                                         VII. 