Linux/Bash Skills

Master Linux file permissions — chmod numeric and symbolic modes, chown ownership, setuid/setgid, sticky bit, ACLs, and umask configuration for secure file management.

This skill should be used when the user asks to "create bash scripts", "automate Linux tasks", "monitor system resources", "backup files", "manage users", or "write production she.

Linux system troubleshooting workflow for diagnosing and resolving system issues, performance problems, and service failures.

Master Linux process management — finding processes, reading resource usage, sending signals, managing priorities, diagnosing high CPU/memory, and using /proc for deep inspection.

Create production-ready systemd services — unit file structure, security directives, dependency management, automatic restarts, logging with journald, and timer-based scheduling.