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  • Question
  • The command that can be used to restrict incoming messages to a user is


  • Options
  • A. mesg
  • B. grep
  • C. halt
  • D. sleep
  • E. None of the above

  • Correct Answer
  • mesg 


  • Unix problems


    Search Results


    • 1. Major expressions used with find command to select file is it has been accessed in more than 375 days, is

    • Options
    • A. -atime +365
    • B. -mtime + 365
    • C. -atime -365
    • D. -mtime -365
    • E. None of the above
    • Discuss
    • 2. The special shell variable $* is used

    • Options
    • A. to exit status of ast command executed.
    • B. to process number of the current shell
    • C. to list the positional parameters
    • D. to name the command being executed
    • E. None of the above
    • Discuss
    • 3. Which of the following commands is used to have a two-way communication with any person who is currently logged in?

    • Options
    • A. mail
    • B. mesg
    • C. write
    • D. grep
    • E. None of the above
    • Discuss
    • 4. The UNIX file system stores a data in physical blocks of

    • Options
    • A. 1024 bytes
    • B. 2048 bytes
    • C. 512 bytes
    • D. 256 bytes
    • E. None of the above
    • Discuss
    • 5. You can append to a file instead of overwriting by using the

    • Options
    • A. > symbols
    • B. >> symbols
    • C. < symbols
    • D. << symbols
    • E. None of the above
    • Discuss
    • 6. Which command is used to display all the lines with the string 'sales' from the file empl.lst?

    • Options
    • A. cut sales empl.lst
    • B. /sales > empl.lst
    • C. grep sales empl.lst
    • D. cat | /sales > empl.lst
    • E. None of the above
    • Discuss
    • 7. Which command is used to save the standard output in a file, as well as display it on the terminal?

    • Options
    • A. more
    • B. cat
    • C. grep
    • D. tee
    • E. None of the above
    • Discuss
    • 8. The [line number G] key allows you

    • Options
    • A. to move cursor left by one position
    • B. to move cursor right by one position
    • C. to move cursor down by one line
    • D. to move cursor to the beginning of the line specified by the number
    • E. None of the above
    • Discuss
    • 9. Which command is used with vi editor to save file and remain in the editing mode?

    • Options
    • A. :q
    • B. :w
    • C. q!
    • D. :x
    • E. None of the above
    • Discuss
    • 10. Which command is used to terminate all processes in your own system except the login shell?

    • Options
    • A. kill 1
    • B. kill 0
    • C. cancel all
    • D. cancel 1
    • E. None of the above
    • Discuss


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