Linux Services and Process Management Questions

Covers managing system services and processes on Linux systems. Includes knowledge of service managers such as systemd and legacy System V init, writing and modifying unit or init files, and service lifecycle commands for starting stopping enabling disabling restarting and reloading services. Also covers process monitoring and troubleshooting tools such as ps top htop pgrep and pkill, understanding process states including running sleeping stopped and defunct, identifying and handling zombie processes, managing background jobs, and using signals such as SIGTERM and SIGKILL for graceful and forced termination. Assessment may include diagnosing runaway processes memory or CPU issues service dependency ordering and techniques for ensuring reliable service operation and controlled restarts.