22S:166  Fall 2006
                                Instructor:  Cowles
                                     Homework 1


Week 1, 8/21: Intro to Linux and LateX

Reading (should be completed by Mon. Aug. 28):

   "Learning the shell" at www.linuxcommand.org   

Problems (due Fri. Sept. 1 in class)

    1.  If you are new to Linux, go through all the steps in "Learning the
        shell" (in Reading section) on a Linux computer.

        You do not have to turn in anything for this problem.

    2.  If you do not already know how to use a Linux text editor, begin
        learning to use "gedit."  It can be brought up in either of two
        ways:

            a.  From the RedHat icon, choose "Accessories/Text editor."

            b.  In a command window, enter 

                           gedit

        Read through the first 3 sections of the on-line manual (under the
        "Help" pull-down). 

        (If you already know how to use Emacs, Vi or Vim, it is fine to use 
         them for this course.)

         You do not have to turn in anything for this problem.

    3.   Create a directory called "s166hw" in your home directory.
         Download the text file of this homework assignment into that
         directory.  Use either gedit, Emacs or Vim to edit the file as 
         follows:

         a. Insert your name as the first line of the file.
         b. Delete the section containing the reading assignment. 
         c. By default, do the Linux computers on the statistics network
            operate in text mode or in graphical mode?  Type your answer
            in the space below, with a one-sentence justification.





         d. Open another terminal window.  In that window, type the
            approprate Linux commands to:

              (1) change to the s166hw directory
              (2) make a subdirectory called "junk" in the s166hw directory
              (3) set the permissions on the "junk" subdirectory so that
                  your group has read/write/execute permission and others
                  do not have any access 
              (4) list the contents of the s166hw directory in such a way
                  that file permissions are displayed
              (5) move the "junk" directory from the s166hw directory into
                  your home directory
              (6) remove the "junk" directory

            Copy the commands and output from the new window into the
            text file in the space below:

    


    4.  (Optional.  Do this question only if you are already familiar with
        Linux and need something more challenging than question 3.)

        Your configuration file will be called .cshrc unless you have
        changed to a shell other than the default.  Edit your configuration
        file to accomplish the following:

        a.  Add the directory /group/yoyo/bin/i386-linux to the end of 
            your path.

        b.  Create an alias so that if you type "print2col <filename>" 
            what will actually be executed is

            nenscript -2rG <filename>


       Copy the lines that you have added to your .cshrc file in the space
       below:




    5.  Save the text document.  To submit your homework, email the text
        document to me as an attachment.
       

        kcowles@stat.uiowa.edu