Thanks to Wandisco Team, which is maintaining the Debian packages for latest subversion versions. This article will help you to Install Subversion 1.9 (SVN) on Ubuntu and Debian systems.

1. Setup Apt Repository

First you need to configure apt repository in your system. Use the following commands to add repository on your Ubuntu and Debian systems.

For Ubuntu Systems:-

$ sudo sh -c 'echo "deb http://opensource.wandisco.com/ubuntu `lsb_release -cs` svn19" >> /etc/apt/sources.list.d/subversion19.list'
$ sudo wget -q http://opensource.wandisco.com/wandisco-debian.gpg -O- | sudo apt-key add -
$ sudo apt-get update

For Debian Systems:-

$ sudo sh -c 'echo "deb http://opensource.wandisco.com/debian `lsb_release -cs` svn19" >> /etc/apt/sources.list.d/subversion19.list'
$ sudo wget -q http://opensource.wandisco.com/wandisco-debian.gpg -O- | sudo apt-key add -
$ sudo apt-get update

2. Install Subversion 1.9 Package

If you have older version installed on your system. You may face some conflict issues. So first remove existing packages from system to avoid any conflicts.

$ sudo apt-get remove subversion

Now install latest available Subversion package using yum command line package manager utility.

$ sudo apt-get install subversion

3. Verify Subversion Version

At this stage you have successfully install Subversion client on your system. Lets use following command to verify version of svn client.

# svn --version


svn, version 1.9.3 (r1718519)
   compiled Dec  9 2015, 12:45:52 on x86_64-unknown-linux-gnu

Copyright (C) 2015 The Apache Software Foundation.
This software consists of contributions made by many people;
see the NOTICE file for more information.
Subversion is open source software, see http://subversion.apache.org/

The following repository access (RA) modules are available:

* ra_svn : Module for accessing a repository using the svn network protocol.
  - with Cyrus SASL authentication
  - handles 'svn' scheme
* ra_local : Module for accessing a repository on local disk.
  - handles 'file' scheme
* ra_serf : Module for accessing a repository via WebDAV protocol using serf.
  - using serf 1.3.7 (compiled with 1.3.7)
  - handles 'http' scheme
  - handles 'https' scheme

References:
1. http://opensource.wandisco.com/