Multiple choice unix

Which command is used to make all files and sub-directories in the directory (progs) executable by all users?





    

      
    
            
  1. 
              
    chmod -R a x progs
    
    
            
    2. 
            
  2. 
              
    chmod -R 222 progs
    
    
            
    3. 
            
  3. 
              
    chmod -1 a x progs
    
    
            
    4. 
            
  4. 
              
    chmod -x a x progs
    
    
            
    5. 
      

    


    

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        A
        Correct answer
      

        

          Explanation
          

            
chmod -R a+x progs recursively makes all files and subdirectories in the 'progs' directory executable for all users. The -R flag applies permissions recursively, 'a' means all users, and '+x' adds execute permission.


          

        

    

  



          

      
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