System & Settings

Send a normal termination signal to one specific process, and escalate to a forced kill only if it refuses to quit.

Kill and auto-restart explorer.exe — the classic repair for a dead Start menu, unresponsive taskbar, or glitchy icons.

Inspect any systemd unit's loaded/enabled state, active state, main PID, and its most recent log lines in one command.

Use the classic ps aux command to list every process on the system with owner, CPU, memory, and command columns.

Enable a systemd service to start at boot and start it immediately with one command.

du measures folder sizes; sorted through sort -rh and cut with head, it shows the top space consumers.

Restart a systemd service correctly: full restart, config-only reload, or restart-only-if-running.

Find out how many memory modules are populated, their capacity and speed, and how many slots your motherboard has.

See which graphics card Windows detects, its driver version, and current output resolution in one line.

Terminate a specific process by PID: first with a plain kill (SIGTERM), then with kill -9 (SIGKILL) only if it refuses to exit.

Use pgrep -fl to instantly look up the PID of any running macOS process by matching its name or command line.

caffeinate holds sleep off while a command runs, or for a fixed number of seconds.