   ()        .
        (process identi-
fication  PID)   ,   .  
   ,    .  -
   ,      . 
   ,   ,  
    ,      .

          -
    1,     :

bash $ Is -I ] Ipr &
[1] 22092
bash $

 [I],    , ,   
   1.  22092   PID   .  -
     

[1]+ Done          Is -1 | Ipr

    ,    
  <CONTROL+2>.       
 .          
    ,     .   
  ,      .

       .  -
   ,    ,   
   .        -
,    fg  .     
 ,  fg ( ),    ,  
   .   ,    -
  ,      ,    -
  :

bash $ fg 1

[1] promptme

   ,    , -
     ,     .   
        "  9.

,    ,    -
 ( <CONTROL+C>);       kill
(.  "kill:   "  11).   kill  
    PID  ,    (4),
    .

   PID,        ps ("process status" 
 , .  " "  9).  
   tail -f outfile ( -f   tail -
   outfile       )   
,    ps   PID ,    -
    kill.      

 7.  I: Bourne Again Shell                                            237