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Computer Science :: Unix & Linux Basics

  1. The commonly used UNIX commands like date, ls, cat, etc. are stored in

  2. A.

     /dev directory

    B.

     /bin and /usr/bin directories

    C.

     /tmp directory

    D.

     /unix directory

    E.

     None of the above

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  3. Which of the following commands is used to remove files with confirmation prompt from the user file system which have neither been accessed nor modified i the last one year?

  4. A.

     find -mtime +365 | rm

    B.

     grep (/usr/*) - mtime + 365 | -ok rm

    C.

     find -name - mtime + 365 / - ok rm

    D.

     find /user/* (-mtime + 365 - a - atime +365 ) - OK rm {} ;

    E.

     None of the above

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  5. Which of the following commands is used to summarize the disk usage?

  6. A.

     chkdsk

    B.

     fdisk

    C.

     du

    D.

     disk

    E.

     None of the above

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  7. Which command is used to sort the lines of data in a file in alphabetical order?

  8. A.

     sort

    B.

     sh

    C.

     st

    D.

     sort -r

    E.

     None of the above

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  9. If a file has read and write permissions for the owner, then the octal representation of the permissions will be

  10. A.

     1

    B.

     6

    C.

     5

    D.

     3

    E.

     None of the above

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  11. Which command is used to copy a file wb with the same name from the programs directory to the misc directory?

  12. A.

     copy programs/wb misc/wb

    B.

     cp programs/wb misc

    C.

     tar programs/wb misc/wb

    D.

     copy a:programs/wb b:misc/wb

    E.

     None of the above

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  13. Which is the earliest and most widely used shell that came with the UNIX system?

  14. A.

     C shell

    B.

     Korn shell

    C.

     Bourne shell

    D.

     Smith shell

    E.

     None of the above

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  15. The seventh field of /etc/password is

  16. A.

     password

    B.

     login

    C.

     shell

    D.

     home

    E.

     None of the above

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  17. Which command is used to display the end of the file?

  18. A.

     head - r

    B.

     tail

    C.

     eof

    D.

     bof

    E.

     None of the above

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  19. Which command is used to create a directory?

  20. A.

     crdir

    B.

     md

    C.

     mkdir

    D.

     cr

    E.

     None of the above

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