--- euca2ools-1.3.1/bin/euca-bundle-vol.ec2cert 2010-11-18 13:57:51.367349699 -0600 +++ euca2ools-1.3.1/bin/euca-bundle-vol 2010-11-18 13:57:35.934866956 -0600 @@ -452,7 +452,11 @@ def main(): if not user: print 'user must be specified.' if not ec2cert_path: - print 'ec2cert must be specified.' + defcert = "/usr/share/euca2ools/cert-ec2.pem" + if os.path.exists(defcert): + ec2cert_path = defcert + else: + print 'ec2cert must be specified or exist in %s.' % defcert usage()