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Linux & Shell Fundamentals

Linux user-space fundamentals and safe, automation-oriented Bash scripting — the command-line literacy underneath testing, CI, and backend work. Each course below is independent -- start with whichever one fits what you want to learn.

Linux and Shell Fundamentals

Linux user-space fundamentals and safe, automation-oriented Bash scripting: the filesystem, pipes and redirection, text processing, processes and permissions, defensive scripting, and CI/cron execution.

14 lessons8hintermediate
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  1. 1. The Linux Filesystem Model and Navigation
  2. 2. Globbing, Quoting, and Expansion
  3. 3. Standard Streams, Pipes, Redirection, and Exit Codes
  4. 4. Text Search and Transformation: grep, sed, and awk Foundations
  5. 5. sort, uniq, cut, head/tail, wc, and Archives
  6. 6. Environment Variables, PATH, and Executable Files
  7. 7. Processes, Signals, and Permissions
  8. 8. Shell Scripting: Parameters, Conditions, Loops, and Functions
  9. 9. Defensive Scripting: set -e, set -u, and pipefail
  10. 10. Temp Files, Cleanup Traps, and Logging
  11. 11. Catching Bugs Early: ShellCheck and Portability
  12. 12. Running Scripts Unattended: cron and CI Execution
  13. 13. Networking Inspection and curl Fundamentals
  14. 14. Secrets, Command History, and Destructive-Command Safety