I tried to delete my tmp
files to free up space, as per the Disk Quota page:
The files in /tmp/ are the most common cause of an unexpected quota max-out. It's usually safe to just delete them all: rm -rf /tmp/ /tmp/.
However, it does not execute:
~ $ rm -rf /tmp/* /tmp/.*
rm: refusing to remove '.' or '..' directory: skipping '/tmp/.'
rm: refusing to remove '.' or '..' directory: skipping '/tmp/..'