apropos:   

     ,      
,          apropos4.  
        (  man-
)  man-     ,    .
 man   -k ("keyword"   )    ,  
apropos (       ).

 . 5.10     apropos,   
 who.     apropos    sort,
  .      , -
   ,       man-.
     (who),   ,    ,
   .  whatis   apropos,   -
     .   ,  -
 : apropos grep  whatis grep.

$ apropos who | sort

at.allow [at]   (5) - determine who can submit jobs via at or batch

(,    

  at  batch)
at.deny [at]    (5) - determine who can submit jobs via at or batch

(,    

  at  batch)
fwhois [whois]  (1) - query a whois or nicname database

(    whois  nicname)
w               (1) - show who is logged on and what they are doing

(,        )
who              (1)  - show who is logged on

(,    )
whoami          (1) - print effective userid

(   )
whois           (1) - query a whois or nicname database

    whois  nicname)

. 5.10.  apropos   man-, 
 

 
   

    ,    ,  
,        .  Linux -
   ,    ,   

4   apropos  ,     whatis  
 makewhatis. .  "  "  3.

 5.  Linux                                                           173