svn updatebut instead encountered this error: "svn: This client is too old to work with working copy '.'; please get a newer Subversion client".
It seemed that my svn client which Ubuntu 8.04 claimed to be the most recent version is actually an old hag. I had to do more than a handful of Google queries to finally land the instructions I needed to get this to work.
Hop on over to https://launchpad.net/~anders-kaseorg/+archive/subversion-1.6 click on "Technical details about this PPA" and choose your Ubuntu version in the select list that appears.
Add the entry "deb http://ppa.launchpad.net/anders-kaseorg/subversion-1.6/ubuntu hardy main" to your sources.list via:
echo "deb http://ppa.launchpad.net/anders-kaseorg/subversion-1.6/ubuntu hardy main" >> /etc/apt/sources.list
You might need to perform that action while logged in as root (sudo -s) or by prefixing the command with sudo" or you'll get a "permission denied".
Once you are done, perform:
sudo apt-get update
and:
apt-get install subversionwhich should list your subversion libraries/client as marked for upgrading.
YMMV