Upgrade Subversion on Mac OS X

8e55x1253x

　　If you get the following error

svn: This client is too old to work with working copy '.';
please get a newer Subversion client

... or you just want to update your subversion client (command line), try the following:

• In Terminal, type "svn --version" to find out what version you currently have
  
• Go to http://www.open.collab.net/downloads/communityand download the latest client for OS X and install it. This will install the new svn into /opt/subversion/bin
  
• Got to your terminal and check your $PATH by typing "echo $PATH".If you don't see /opt/subversion/bin in there, make sure you add it bytyping export PATH=/opt/subversion/bin:$PATH. If it DOES exist andappears AFTER /usr/bin, then you may need to remove an older copy ofsvn that came installed on OS X. To do so, go to /usr/bin and removeall files starting with svn. This isn't an exact science but it shoulddo the trick.
  
• 　　To be able to call the Subversion commands from every directory, youmust add it to your path in the ".profile" or .bash_profile. If you don't know what that means, don'tworry. Just follow the instructions.
  　　Open the Terminal application. It can be found in the/Applications/Utilities folder. Whenever you see below a line startingwith a dollar sign, you should type the text after the dollar sign inyour terminal and hit return.
  　　Start by creating a new text file called '.bash_profile' in "~/" directory, i.e. with the command line text editor pico:
  $ handy .profile
  　　Add the following line to the .profile file:
  export PATH=/opt/subversion/bin/:$PATH
  　　Now hit Control-X, then confirm saving the file with 'y', followed by return.
  　　You have just added Subversions's location to your path. LetTerminal read this file to know the path has changed (there's an emptyspace between the dots):
  $ . .profile or . ./.profile*
  (Step 4 referent from: http://www.rubyrobot.org/tutorial/subversion-with-mac-os-x)
  
• Type "svn --version". You should see that you have the newest version installed!
  

　　NOTE: If /opt/subversion/bin already exists, it will be backed up to/opt/subversion_backup.MMDDYYHHMMSSS. See the readme for moreinformation.
　　*See http://www.tech-recipes.com/rx/2621/os_x_change_path_environment_variable/for a great explanation of this
　　
　　Quote from : http://www.redfinsolutions.com/redfin-blog/update-subversion-mac-os-x