Redwood's simulated control evals have an LLM fake tool outputs while an attacker works in real code. Safety error: 3.6 points, against 10.1 for BashArena.
Linux records how much CPU time a process has used, never a percentage. Every percent figure is a difference over an interval, which is why ps and top disagree and why a tool can print a confident zero.
A process list sorted by resident memory can hide the largest holder, because memory pushed to swap no longer counts as resident. Where Linux records the swapped part, and a one-line way to rank by both.
An open port and a running process say little about whether a service actually answers. How to write a health check that asks the real question, in Docker and Kubernetes.
A full disk breaks everything at once. Where the space usually hides on a small Linux server, and the warnings worth setting before the last few percent go.