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Install and Use Subversion (svn) and ViewVC on Ubuntu

Install Subversion with Web Access on Ubuntu

  1. To install subversion, open a terminal and run the following command:
    sudo apt-get install subversion libapache2-svn
  2. To create a folder for the subversion repository in /svn, use
    sudo svnadmin create /svn
  3. Edit the configuration file for the subversion webdav module.
    sudo nano /etc/apache2/mods-enabled/dav_svn.conf


    The Location element in the configuration file dictates the root directory where subversion will be acessible from, for instance: http://128.143.XX.XX/svn
    In the file uncomment the following lines

    <Location /svn>
    
    DAV svn
    
    #The SVNPath line should be set to the same place 
    #your created the repository with the svnadmin command.
    
    # Set this to the path to your repository
    SVNParentPath /svn
    
    # Uncomment the following 3 lines to enable Basic Authentication
    AuthType Basic
    AuthName “Subversion Repository”
    AuthUserFile /etc/apache2/dav_svn.passwd
    Require valid-user ## add this line
  4. To create a user on the repository, use the following command:
    sudo htpasswd -cm /etc/apache2/dav_svn.passwd <username>


    Type in password when required.

  5. If the password file exists, use the following command:
    sudo htpasswd -m /etc/apache2/dav_svn.passwd <username>


    Type in password when required.

  6. Restart apache by running the following command:
    sudo /etc/init.d/apache2 restart
  7. Now if you go in your browser to http://128.143.XX.XX/svn. Input username and password created when required.

Use SVN

  1. Create a repos using
    $ svnadmin create /svn/repos1

    on the server

  2. In the local computer, check out the repos1 by using
    svn checkout http://128.143.XX.XX/svn/repos1
  3. Now add a new or update a file on the server
    1. Create a file
      nano test.txt
    2. Add it to repos1
      svn add test.txt
    3. Upload it to the sever to repos1
      svn commit test.txt -m "Initial readme file"

Install ViewVC on Ubuntu

  1. In the terminal
    sudo apt-get install viewvc
  2. Edit SVN configuration file
    sudo nano /etc/apache2/mods-enabled/dav_svn.conf

    Add the following line in the file

    ScriptAlias /viewvc /usr/lib/cgi-bin/viewvc.cgi

    at the end of the file

  3. Edit the file
    /etc/viewvc/viewvc.conf

    Change the root_parents to

    root_parents = /svn : svn
  4. Restart apache by running the following command:
    sudo /etc/init.d/apache2 restart
  5. Visit
    http://128.143.XX.XX/viewvc/viewvc.cgi

Access control for ViewVC

By default, anyone can access ViewVC. To control access using the rules for svn. Open the svn configure file using

sudo nano /etc/apache2/mods-enabled/dav_svn.conf

and add the following at the end

<Location /viewvc>                                        
 AuthType Basic
 AuthName "ViewSVN"
 AuthUserFile /etc/apache2/dav_svn.passwd
 Require valid-user
 </Location>

Math Magics

        1 x 8 + 1 = 9

       12 x 8 + 2 = 98

      123 x 8 + 3 = 987

     1234 x 8 + 4 = 9876

    12345 x 8 + 5 = 98765

   123456 x 8 + 6 = 987654

  1234567 x 8 + 7 = 9876543

 12345678 x 8 + 8 = 98765432

123456789 x 8 + 9 = 987654321




        0 x 9 + 1 = 1

        1 x 9 + 2 = 11

       12 x 9 + 3 = 111

      123 x 9 + 4 = 1111

     1234 x 9 + 5 = 11111

    12345 x 9 + 6 = 111111

   123456 x 9 + 7 = 1111111

  1234567 x 9 + 8 = 11111111

 12345678 x 9 + 9 = 111111111

123456789 x 9 +10 = 1111111111




       9 x 9 + 7 = 88

      98 x 9 + 6 = 888

     987 x 9 + 5 = 8888

    9876 x 9 + 4 = 88888

   98765 x 9 + 3 = 888888

  987654 x 9 + 2 = 8888888

 9876543 x 9 + 1 = 88888888

98765432 x 9 + 0 = 888888888




        1 x 1 = 1

       11 x 11 = 121

      111 x 111 = 12321

     1111 x 1111 = 1234321

    11111 x 11111 = 123454321

   111111 x 111111 = 12345654321

  1111111 x 1111111 = 1234567654321

 11111111 x 11111111 = 123456787654321

111111111 x 111111111 = 12345678987654321
2009/04/17 22:20 · 0 Comments · 1 Linkback

Install OpenBUGS

Steps

  1. Download OpenBUGS (Note only OpenBUS 2.2.0 works on unix machines) and upload it to dscratch. First upload it to AFS and then copy it to dscratch.
  2. Unzip the file on the cluster
  3. Create a file called linbugs with the following content and change permission using chmod 755 lingbugs
    #!/bin/bash
    
    export LD_ASSUME_KERNEL=2.4.1
    
    DIR=$(dirname $0)
    cd "$DIR"
    if [ \! -e "$DIR/temp" ] ; then
            mkdir "$DIR/temp"
    fi
    
    if [ -e bugs.so ] ; then
            ./cbugs "$DIR" "$DIR/temp" "/bugs.so"
    else
            ./cbugs "$DIR" "$DIR/temp" "/brugs.so"
    fi
  4. Create a file called Cbugs and compile it using
      gcc -o cbugs CBugs.c -ldl -m32 

    . The file includes the following codes

    /*              GNU General Public Licence
    
            This small C program loads the bugs.so ELF shared library. 
            Save it as a .c file and then
            compile it on Linux using gcc -o cbugs Cbugs.c -ldl
    
    */
    
    #include <dlfcn.h>
    #include <stdio.h>
    #include <string.h>
    
    int main (int argc, char **argv)
    {
            void * handle;
    
            handle = dlopen("./bugs.so", RTLD_LAZY);
            if (handle)
            {
                    dlclose(handle);
            }
            return 0;
    }

An example

  1. Start OpenBUGS by
    ./linbugs

    in the OpenBUGS directory

  2. If OpenBUGS successfully run, you will see
    OpenBUGS ClassicBUGS release 2.1.1
    type 'modelQuit()' to quit
    Bugs> 
  3. Then type in the following commands (those after >)
     Bugs> modelCheck("Examples/Airmodel.txt")
    model is syntactically correct
    Bugs> modelData("Examples/Airdata.txt")
    data loaded
    Bugs> modelCompile()
    model compiled
    Bugs> modelInits("Examples/Airinits.txt")
    model is initialized
    Bugs> modelUpdate(100000)
    100000 updates took 4 s
    Bugs> samplesSet("theta")
    monitor set
    Bugs> summarySet("theta")
    monitor set
    Bugs> modelUpdate(10000)
    10000 updates took 0 s
    Bugs> samplesStats("theta")
                             mean      sd        MC_error  val2.5pc  median    val97.5pc start     sample
    theta[1]                 -1.1      1.332     0.1092    -5.243    -0.7288   0.2504    101001    10000
    theta[2]                 0.05332   0.05231   0.004327  0.002579  0.03949   0.2046    101001    10000
    Bugs> samplesCoda("*","output")
    CODA files written
    Bugs> modelQuit()
    
2009/03/05 09:50 · 0 Comments · 0 Linkbacks

Copy Tables from Excel to LyX

This is the way to copy tables from Excel to Lyx I found on the web.

  1. In LyX, insert a table with the same dimensions as the one in the excel.
  2. Place the mouse cursor in the top left cell of the table.
  3. From the menu of LyX, choose Edit → Paste Special → Plain Text, Join Lines.
2009/01/12 13:27 · 0 Comments · 0 Linkbacks

Welcome!

After I moved to the University of Notre Dame for 4 months, I finally found some time to set my ND website up. This does not replace my old website at http://www.psychstat.org/us because it is mainly for the classes I teach. And, unfortunately, for obvious reasons, the class pages cannot be accessed publicly. I will give authorization to the students in my classes. For those who are not on the roster of the classes and are still interested in accessing the class pages, you may have to contact me first to get the authorization.

2008/11/08 10:52 · 0 Comments · 0 Linkbacks

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Note. Everything on this blog only reflects my personal view which may or may not be true and is not related to any organization or institute.

blog.txt · Last modified: 2024/09/17 13:50 by johnny