Linux

Write Bash scripts with variables, loops, and error handling

Create and manage systemd services and timers

Configure Linux networking with iptables, DNS, and SSH

Manage file permissions, ownership, and ACLs

Monitor and manage processes with ps, top, htop, and signals

Manage disks, partitions, LVM, and filesystem mounts

Create a production-grade systemd service with logging, restart, and security hardening

Find performance bottlenecks on Linux with perf, strace, and bpftrace