======Subversion (SVN)======
\\
==To access eecs svn repository==
https://svn.eecs.yorku.ca/repos/<Repository-name>
\\
==How to create a new directory under an existing repository==
Create the directory structure from the administration interface
        (https://svn.eecs.yorku.ca/admin.php)
Add the users that you want to access the repository (allow Access Allow Modify)

The directory must be created by the owner of the repository
In this case (You). If however the user is at the top level of your repository, with (Allow Modify access)  he/she can add the directory as well
    $  svn mkdir https://svn.eecs.yorku.ca/repos/seela/xyz
Now that the directory is created and users can have access to it
Working Example
   From administrative interface , I added myself to
     seela top level with Access (Allow and Modify)
     Created a directory test1
   Add seela with both allow and modify access
   Ran the following command
   desktop7 % svn mkdir https://svn.eecs.yorku.ca/repos/seela/xyz
   Authentication realm: <https://svn.eecs.yorku.ca:443> Subversion Repository
   Password for '<username>': xxxxxxxx
   ATTENTION!  Your password for authentication realm:
   <https://svn.eecs.yorku.ca:443> Subversion Repository
......
Committing transaction...
Committed revision 29.

$ svn list https://svn.eecs.yorku.ca/repos/seela/xyz
           no data
$ svn co https://svn.eecs.yorku.ca/repos/seela/xyz
  Will create the directory back to by home directory
  Checked out revision 29.
  Created file hello.txt
$ svn status
  ?         hello.txt
$ svn add hello.txt
  Adding         hello.txt
  Transmitting file data ..

==Accessing svn from a MacOS, Linux Desktop or WindowsOS==
On unix like operating systems , svn has a default client /usr/bin/svn
On Windows you can download a free client = Most common is TortoiseSVN