Hi Mark Assuming you've cleared some space in your hard drive now. Apologies if you've already tried this, but worth checking permissions on the command line for /usr/bin using ls -l
Assuming also you've not got the write permissions you need, try running Sudo chmod 774 -R /usr/bin (assuming a ubuntu based system) to change the user and group permissions to read write and execute on that directory recursively. You may be able to re-run your apt-upgrade. Good article on chmod if you are unfamilar https://helpdeskgeek.com/linux-tips/understanding-linux-permissions-chmod-usage/ which might help Chris On 14 October 2017, at 02:52, Mark Rogers via Peterboro <peterboro@mailman.lug.org.uk> wrote: Background: Performed apt upgrade not realising my disk was full. I assume that's when the problem started but don't know for sure. When I now run an apt upgrade it fails because it can't create directories in /usr/bin (permission denied). I have confirmed that I also can't create them (as root). The filesystem checks out ok, and the partition is writeable (confirmed by creating directories elsewhere). Directory permissions look ok too. Suggestions? Mark
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