With regards to the original problem statement, apt-get clean fails because there is nothing in /var/cache/apt. However, apt-get update works fine.
** Changed in: apt (Ubuntu) Importance: High => Medium ** Changed in: apt (Ubuntu) Importance: Medium => Low -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1356700 Title: apt doesn't always recreate missing directories in /var/cache Status in apt package in Ubuntu: Confirmed Bug description: I'm using Ubuntu 14.10 dev with apt 1.0.4ubuntu6 and if /var/cache gets emptied apt doesn't recreate in all cases the missing directories for example with the command "apt-get clean". Here is an example output: root@ubuntu:~# apt-get clean root@ubuntu:~# rm -fr /var/cache/* root@ubuntu:~# apt-get clean E: Could not open lock file /var/cache/apt/archives/lock - open (2: No such file or directory) E: Unable to lock the download directory To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1356700/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp

