Month 2 Labs

Five labs, completed in order. Each has its own directory with a full specification. The lab attempt floor and the AI-free rule apply to every one: the tutor refuses AI assistance on the lab work itself for the whole month.

Lab	Directory	Time budget	Floor	What you build
2.1 Linux Fundamentals	lab-01-linux-fundamentals/	8 to 10 h	45 min	Shell navigation, permissions, processes, and package fluency on your own VM
2.2 Five Shell Scripts	lab-02-five-shell-scripts/	12 to 14 h	90 min	Five real scripts with set -euo pipefail, error handling, and meaningful exit codes
2.3 Regex Drills	lab-03-regex-drills/	8 to 10 h	90 min	Hand-written regex fluency across BRE, ERE, and PCRE
2.4 Log Parsing Pipelines	lab-04-log-parsing-pipelines/	10 to 12 h	90 min	Ten grep/sed/awk pipelines that extract patterns from real log formats
2.5 GTFOBins Exploration	lab-05-gtfobins-exploration/	6 to 8 h	45 min	A written account of why five ordinary binaries become dangerous when privileged

Total time budget is roughly 50 hours, matching the master plan. Individual labs vary; the sum is what matters.

Complete all five, commit a notebook entry for each, complete the Month 1 cold revisit on the third Friday, and produce the two end-of-month deliverables (the linux-survival.md cheat sheet written from memory and the five scripts in a public repo; see ../deliverable.md) before advancing to Month 3.