There is an upstart logrotate job that runs automatically soon after session start, however, it does not (yet) run periodically to handle rogue jobs such as gnome-session. You can however run the job yourself simply enough as a non-root user:
$ start logrotate Please attach a few lines of the output from your gnome-session log. ** Package changed: upstart (Ubuntu) => gnome-session (Ubuntu) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/1269838 Title: gnome-session.log takes 8 GB in a few hours Status in “gnome-session” package in Ubuntu: New Bug description: Hello, On a fresh install of saucy 64 bits, ~/.cache/upstart/gnome-session.log grows incredibly fast. 8 GB in a few hours. Worked it around with a rm as cron task. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: upstart 1.10-0ubuntu7 ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10 Uname: Linux 3.11.0-15-generic x86_64 ApportVersion: 2.12.5-0ubuntu2.2 Architecture: amd64 Date: Thu Jan 16 16:02:23 2014 InstallationDate: Installed on 2014-01-10 (5 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MarkForUpload: True SourcePackage: upstart UpgradeStatus: No upgrade log present (probably fresh install) UpstartBugCategory: Session UpstartRunningSessionCount: 1 UpstartRunningSessionVersion: init (upstart 1.10) UpstartRunningSystemVersion: init (upstart 1.10) upstart.upstart-file-bridge.log: Job got added /com/ubuntu/Upstart/jobs/unicast_2dlocal_2davahi Job got added /com/ubuntu/Upstart/jobs/update_2dnotifier_2dcrash Job got added /com/ubuntu/Upstart/jobs/update_2dnotifier_2drelease To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1269838/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
