      
                                                                 
                           UNIX                       
                                                                 
      

      
                                                                 
                                                     
                                                                 
      


      p   㯮㫨  ⠪ ⨨,  "p -
  䠩".    ⠪ ?

      ⫨稨  DOS-⥬,   짮⥫    p-
᪨   䠩,  UNIX-⥬   䠩  p  p-
祭. p 㯠  䠩  p   䠩  (file  permission
bits) ᯮ  p p p 짮⥫  -
 䠩.

     p  䠩 ᮯp  䠩  p   -
⥫ 䠩,  p  ⠫  뫪.   p  
   ᯥ樠 .

      pᬮp p 㯠 䠩    ⥪饬  ⠫    -
짮  "ls -l":

     Ŀ
       $ ls -l                                                        
                                                                      
                                                                      
       total 1315                                                     
       -rw-r--r--   2 root  wheel     262 Oct 28 00:50 .profile       
       -r--------   1 root  wheel      37 Sep 20 05:01 .rhosts        
       drwxr-xr-x   2 root  wheel     512 Nov 29 01:49 a              
       dr-xr-xr-x   2 root  wheel    1024 Jan  4 00:58 bin            
        ^_______^                                                     
            `                                                         
             `---------------------------------- p 㯠        
     

     p 㯠, 뢮 p ᯮ짮 樨 "-l",  ᮤp  9
ᨬ, p p  3 p㯯:

      p㯯 p ᫥騥 p 㯠:

     1- - p 㯠   䠩
     2- - p 㯠  㣨 짮⥫ ⮩  㯯
     3- - p 㯠   㣨 짮⥫.

       㯯 3 ᨬ  p  㯠  ᮮ⢥⢥  
⥭,     ᯮ 䠩   ணࠬ.    ⠫
p 㯠 " 믮" 砥 ࠧ襭     䠩  
 ⠫.

        ᮤp 3 ᨬ:

         r     pp襭 ⥭ (⠫)

         w     pp襭  ( ⠫ - ᮧ  㤠)

         x     pp襭 믮 (  ⠫)

         -     ᮮ⢥騩  p饭

     Ŀ
       $ ls -l                                                  
                                                                
       total 1315                                               
       -rw-r--r--   2 root  wheel     262 Oct 28 00:50 .profile 
       -r--------   1 root  wheel      37 Sep 20 05:01 .rhosts  
       drwxr-xr-x   2 root  wheel     512 Nov 29 01:49 a        
       dr-xr-xr-x   2 root  wheel    1024 Jan  4 00:58 bin      
        ^_^^_^^_^                                               
         `  `  `-------- p 㯠 p㣨 짮⥫     
          `  `---------- p 㯠 짮⥫  p㯯  
           `------------ p 㯠  䠩          
                                                                
     

       pp p 㯠 (-rw-r--r--) 䠩 ".profile"  -
,   䠩 (root)  p ⥭   ⮣ 䠩-
,  p㣨   ⮫쪮 .

     p ᮧ 짮⥫  䠩 ,  p,  ᮧ
믮塞,  ⠭p p p 㯠:

                            Ŀ
                             rw-r--r-- 
                            

      ⮣, ⮡ ᤥ  믮塞,  室  ⠭
p "x"    "chmod".  ⢨ 室  믮-
 ⠪    䠩. 쪮 ᫥ ⮣ 䠩  
饭  믮.

      ⠪    "umask" ⠭ p p  -
,  p묨  ᮧ  䠩, pp:

                            Ŀ
                             rwxr-xr-x 
                            
