bash

Guide for writing production-quality bash scripts following modern idiomatic practices. Enforces set -euo pipefail, [[ ]] conditionals, ${var} syntax, ShellCheck compliance. Triggers on "bash script", "shell script", ".sh file", "write a script", "automation script", "bash function", "shellcheck", "bash template", "pre-commit hook", "deploy script", "build script", "install script", "setup script", "bash error handling", "bash arrays", "bash loop", "bash conditional", "parse arguments", "getopts", "bash logging", "#!/bin/bash", "source script", "dot script", "shell function", "edit script", "update script", "modify script", "change script", "edit .sh", "update .sh", "modify .sh", "statusline.sh", "hook script". PROACTIVE: MUST invoke BEFORE editing/writing ANY .sh file or pre-commit hook.