The following is modified from an email sent by Prof. Smith on the use of the command line svn program under linux here at CS
svn status <filename>
svn status -u
svn diff <filename>
svn log [--verbose] <filename>
svn commit -m "description text"
Notes on svn add:
svn add <file-or-dir-name>
A great place to start learning more about subversion is http://svnbook.red-bean.com/. While working with subversion you should also remember to take advantage of svn help .