Multiple choice unix

The Octal number to be given alogn with chmod command to make a file readable, writable and executable to the owner, readable and executable to group and others is:





    

      
    
            
  1. 
              
    000
    
    
            
    2. 
            
  2. 
              
    755
    
    
            
    3. 
            
  3. 
              
    744
    
    
            
    4. 
            
  4. 
              
    555
    
    
            
    5. 
      

    


    

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        B
        Correct answer
      

        

          Explanation
          

            
In octal notation, 7 (binary 111) represents read, write, and execute permissions, while 5 (binary 101) represents read and execute. Therefore, 755 grants the owner full permissions and gives the group and others only read and execute permissions. 744 would leave group/others without execute permission.


          

        

    

  



          

      
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