  ?

  (?)    ,   -
  .        -
 .        -
  1:

$ Ipr memo?

   memo?       -
,      memo    .   -
  Ipr.  Ipr  "",   ,    ,
 .        
  ,   Ipr   (memo?), ,  -
 ,    .

   Is        , 
    ,    memo?:

$ Is

mem  memol2 memo9 memoalex newmemo5

memo memo 5   memoa memos

$ Is memo?

memo5 memo9 memoa memos

  memo?    mem, memo, memol2, memoalex
 newmemoS.        
  :

$ Is

7may4report may4report     mayqreport may report
mayl4report may4report.79 mayreport   may.report
$ Is may?report
may.report may4report may report mayqreport

     ,   
echo  Is; echo  ,   :

$ echo may?report

may.report may4report may_report mayqreport

          
 ,   may?report     
echo,            . 
 echo       .    -
      (   ).  -
     ,   ,  -
        .

  *

 (*)     ,   
 ,      ,   . 
      ,     , 

 7.  I: Bourne Again Shell                                            239