Reference and Selective Reading

You do not need to read every imported source file front-to-back. Use the concept pages first. Open these reference pages when you need a cleaner source map, more examples, or a deeper explanation for a concept that still feels unstable.

Read Only If Stuck

• Shell and Filesystem Foundations
• Commands, Streams, and Pipes
• Processes, Signals, and Jobs
• Vim and Modal Editing
• Environment Variables, PATH, and Startup Files
• Shell Scripting and Dotfiles

Concept-to-Source Map

Concept page	Best source if stuck	Why this source
Shell Navigation and File Operations	Shell and Filesystem Foundations	Best for terminal, prompt, paths, and core commands
Process Management and Job Control	Processes, Signals, and Jobs	Best for process state, job control, and safe termination
Command Composition, Redirection, and Pipes	Commands, Streams, and Pipes	Best for stdin, stdout, stderr, redirection, and pipelines
Modal Editing with Vim	Vim and Modal Editing	Best for mode-based editing and movement vocabulary
Environment Variables and Shell Startup	Environment Variables, PATH, and Startup Files	Best for PATH, export, startup-file logic, and shell behavior
Dotfiles and Reproducible Setup	Shell Scripting and Dotfiles	Best for install scripts and reproducible configuration

Direct Source Shortcuts

If you need help with...	Best source
shell motivation and basic navigation	Missing Semester course-shell.md
streams, environment variables, dotfiles, SSH	Missing Semester command-line-environment.md
editor philosophy and modern dev tools	Missing Semester development-environment.md
command types and documentation	The Linux Command Line chunk 016
redirection details	The Linux Command Line chunk 018
process states and ps	The Linux Command Line chunk 032
PATH and startup files	The Linux Command Line chunks 036-037
shell script basics	The Linux Command Line chunk 090
Unix and POSIX context	Unix standards