Multiple choice unix

Which of the following is not a communication command.





    

      
    
            
  1. 
              
    write
    
    
            
    2. 
            
  2. 
              
    mesg
    
    
            
    3. 
            
  3. 
              
    mail
    
    
            
    4. 
            
  4. 
              
    grep
    
    
            
    5. 
      

    


    

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        D
        Correct answer
      

        

          Explanation
          

            
grep is a text search utility, not a communication command. write, mesg, and mail are all UNIX commands for user-to-user communication.


          

        

    

  



          

      
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