Context On modern Linux systems, systemd is the init system. Whether you’re managing servers, debugging CI runners, or operating production hosts, systemd is the layer that: starts services supervises them restarts them logs their output
Context Archiving and compression show up everywhere: packaging releases shipping logs backing up data moving artifacts between systems Most workflows rely on a small set of commands, but the flags are easy to forget. This cheatsheet focuses on the combinations you actually use.
Context Ruby projects often depend on specific Ruby versions and gem sets. RVM (Ruby Version Manager) helps isolate those dependencies so: projects don’t conflict upgrades are controlled development environments stay predictable
Context tmux is one of those tools that quietly becomes indispensable. If you: work over SSH manage multiple shells run long-lived processes juggle several environments at once
Context Vim rewards depth over breadth. You don’t need to know every command—just a small, reliable core that lets you move, edit, and refactor text efficiently without leaving the keyboard. This cheatsheet focuses on high-value commands that cover the majority of real-world editing tasks.
Context Docker is simple until it isn’t. Most day-to-day work boils down to a small, reliable set of commands for: building images running containers
Context Kubernetes has a large surface area, but day-to-day operations rely on a small, repeatable set of kubectl commands. This cheatsheet emphasizes: inspection over modification safety before speed