Tag: unix

Questions Related to unix

The agency that sits between the user and the UNIX system is called the



      

    

    

      
            unix

    

    

      
    
            
  1. 
              
    logic
    

            
    2. 
            
  2. 
              
    profile
    

            
    3. 
            
  3. 
              
    shell
    

            
    4. 
            
  4. 
              
    erxc
    

            
    5. 
      

    

    

    

      

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        Correct Option: C
      

    

  



      

    

      

          
Which of the following commands is used to update access and modification times of a file?


      

    

    

      
          unix

    

    

      
    
          
  1. 
            
    grep
    

          
    2. 
          
  2. 
            
    wc
    

          
    3. 
          
  3. 
            
    touch
    

          
    4. 
          
  4. 
            
    cat
    

          
    5. 
      

    

    

    

      

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        Correct Option: C
      

    

  



    

    

      

        
Which command is used to count just the number of characters in a file?


      

    

    

      
            unix

    

    

      
    
            
  1. 
              
    wc - 1
    

            
    2. 
            
  2. 
              
    wc -c
    

            
    3. 
            
  3. 
              
    wc -w
    

            
    4. 
            
  4. 
              
    wc -r
    

            
    5. 
      

    

    

    

      

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        Correct Option: B
      

    

  


    



      

    

      

          
Which of the following commands is used to list contents of directories?


      

    

    

      
          unix

    

    

      
    
          
  1. 
            
    ls
    

          
    2. 
          
  2. 
            
    lp
    

          
    3. 
          
  3. 
            
    dir
    

          
    4. 
          
  4. 
            
    tar
    

          
    5. 
      

    

    

    

      

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        Correct Option: A
      

    

  



      

    

      

          
Which command is used to display a file contents in octal form?


      

    

    

      
          unix

    

    

      
    
          
  1. 
            
    cd
    

          
    2. 
          
  2. 
            
    od
    

          
    3. 
          
  3. 
            
    of
    

          
    4. 
          
  4. 
            
    oct
    

          
    5. 
      

    

    

    

      

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        Correct Option: B
      

    

  



      

    

      

          
Which command will be used with vi editor to insert text to left of cursor?


      

    

    

      
          unix

    

    

      
    
          
  1. 
            
    s
    

          
    2. 
          
  2. 
            
    S
    

          
    3. 
          
  3. 
            
    a
    

          
    4. 
          
  4. 
            
    i
    

          
    5. 
      

    

    

    

      

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        Correct Option: D
      

    

  



      

    

      

          
In vi editor, forward search is performed using the command.


      

    

    

      
          unix

    

    

      
    
          
  1. 
            
    :pat
    

          
    2. 
          
  2. 
            
    :pat
    

          
    3. 
          
  3. 
            
    /pat
    

          
    4. 
          
  4. 
            
    All of the above
    

          
    5. 
      

    

    

    

      

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        Correct Option: D
      

    

  



    

    

      

        
Which of the following special shell variables is used to process number of the last background job?


      

    

    

      
            unix

    

    

      
    
            
  1. 
              
    $!
    

            
    2. 
            
  2. 
              
    $#
    

            
    3. 
            
  3. 
              
    $0
    

            
    4. 
            
  4. 
              
    $*
    

            
    5. 
      

    

    

    

      

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        Correct Option: A
      

    

  



    

    

      

        
Which option will be used with ps command to slow the entire command line of the process being run?


      

    

    

      
            unix

    

    

      
    
            
  1. 
              
    -4
    

            
    2. 
            
  2. 
              
    -f
    

            
    3. 
            
  3. 
              
    -1
    

            
    4. 
            
  4. 
              
    -5
    

            
    5. 
      

    

    

    

      

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        Correct Option: B
      

        

          
AI Explanation

          

          

              

                
To answer this question, you need to understand the options that can be used with the ps command.



Let's go through each option to understand why it is correct or incorrect:



Option A) -4 - This option is incorrect because -4 is not a valid option for the ps command.



Option B) -f - This option is correct because the -f option is used with the ps command to provide full-format listing. It displays additional information about each process, including the command line of the process being run.



Option C) -1 - This option is incorrect because -1 is not a valid option for the ps command.



Option D) -5 - This option is incorrect because -5 is not a valid option for the ps command.



The correct answer is Option B) -f. This option is correct because it provides a full-format listing, including the command line of the process being run.




                
              

          

        

    

  



    

    

      

        
Which of the following command addresses all users who are currently hooked on?


      

    

    

      
            unix

    

    

      
    
            
  1. 
              
    write
    

            
    2. 
            
  2. 
              
    mail
    

            
    3. 
            
  3. 
              
    wall
    

            
    4. 
            
  4. 
              
    mesg
    

            
    5. 
      

    

    

    

      

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        Correct Option: C