No, courses/modelCourse is not updated using svn.
First check to see if your model course needs to be updated. Use svn to update/opt/webwork/webwork2/courses.dist/
Then cd /opt/webwork/webwork2/courses.dist/ and run
diff -r modelCourse/ /opt/webwork/courses/modelCourse/
This will show all differences between your courses/modelCourse and
courses.dist/modelCourse. If there are only minor updates you can make them by hand. If there are major changes and you want to start over, do the following:
cd /opt/webwork/webwork2/courses/
mv modelCourse modelCourse.old
Then follow the relevant instructions in
http://webwork.maa.org/wiki/Installation_Manual_for_2.5_on_Ubuntu_10.04#Move_the_System_into_the_Required_Directories
(i.e.
$ cd /opt/webwork/webwork2/courses.dist
$ cp *.lst /opt/webwork/courses/
$ rsync -a --exclude '.svn' modelCourse /opt/webwork/courses/)
and
http://webwork.maa.org/wiki/Installation_Manual_for_2.5_on_Ubuntu_10.04#Setting_Permissions
to create the new modelCourse.
Also see
http://webwork.maa.org/wiki/Upgrading_WeBWorK#Check_for_updates_to_courses.dist
Hope this helps.
Arnie