What happened is arguably more stupid: by filling up the disk, 1) they definitely noticed, 2) I couldn't get what I wanted, and 3) I couldn't clean up the logs

What happened is arguably more stupid: by filling up the disk, 1) they definitely noticed, 2) I couldn't get what I wanted, and 3) I couldn't clean up the logs after it. Thankfully I had covered up my steps (or, more probably, the sysadmin was ashamed to see he had been hacked and chose to fix it and say nothing).