5 micro-topics in Systems & Tooling, each with the evidence that proves you have it and the written reason behind every link. Before you start, it rests on 1 other domain. Downstream, it holds up 5 domains.
5 topics · depth 0–5 of 16 · 4 internal links · 1 in · 5 out
Load-bearing links first. Each one says what in this domain rests on what outside it, and why.
1 link
Explain shell startup files rests on Work with hidden files and dotfiles
Startup files are dotfiles.
In prerequisite order. Each idea names the artifact that closes it, the market demand that put it on the map, and what it stands on.
Depth 0 · procedural · guided · M01 §1.5
Encodes useful state into PROMPT
Write aliases and shell functions
Prompt customization is the same file and the same syntax.
Depth 3 · conceptual · scaffolded · M01 §1.5
Distinguishes .zshrc, .zprofile and .zshenv
Work with hidden files and dotfiles · Filesystem
Startup files are dotfiles.
Depth 4 · procedural · unassisted · M01 §1.5
Exports and inspects variables with export and printenv
Variables are set in the files that load at startup.
Depth 4 · procedural · unassisted · M01 §1.5
Shortens repeated commands into named ones
Aliases live in the startup file.
Depth 5 · conceptual · unassisted · M01 §1.5
Adds directories and understands why order matters
PATH is an environment variable with rules.
Everything downstream that names an idea here as a prerequisite, grouped by where it lives.
1 link
Manage secrets and environment config rests on Manage environment variables
Configuration reaches the process as environment.
1 link
Install system packages rests on Configure PATH
Installed binaries are only usable if PATH resolves them.
1 link
Write and run a shell script rests on Configure PATH
Running a script by name requires PATH resolution.
1 link
Manage configuration as typed settings rests on Manage environment variables
Configuration comes from environment variables.
1 link
Configure Git and ignore rules rests on Write aliases and shell functions
Git aliases are the same idea as shell aliases.
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