Command-Line Mastery

• Bash: pipelines, process substitution, traps, xargs, awk/sed enough to filter and reshape output.
• PowerShell: pipeline objects, Get-*/Set-* patterns, remoting, formatting vs filtering.
• Windows cmd + built-ins: net, sc, wmic replacements, reg, schtasks.
• SSH: keys, config, jump hosts, port forwards, agent forwarding hygiene.
• Networking: ip, ss, tcpdump, netcat, curl with headers, dig.
• Files/processes/services/logs: find, lsof, ps, systemctl, journalctl, Get-WinEvent.

The goal is not command recall. It is synthesizing a solution from primitives when the tutorial's tool is unavailable.