Marcus Comstedt (ACROSS) (Hail Ilpalazzo!) @ Pike (-) developers forum wrote:
then your version of git is to old. --graph is a very new addition i believe in 1.5.6 (my version is 1.5.6.1)
1.5.4.3. I have an up-to-date Ubuntu Hardy Heron.
Try adding backports. I'm not quite sure where the latest version of git is in ubuntu. In debian it's in testing.
Or, use: git clone git://git.kernel.org/pub/scm/git/git.git and make install it from the master branch.