I put together seven Linux commands that I think are some of the most often misunderstood or unknown tools that I find useful for troubleshooting. We take a look at ss, lsof, findmnt, journalctl, watch, ip route get, and timeout. If you are looking for a way to find what is listening on a port, identifying processes using files, understanding mounts, tracing routing decisions, and troubleshooting services. These are the tools that can help you do that quickly.