What problem does it solve? Bash has dense syntax with many edge cases - quoting rules, expansion order, parameter expansion forms, redirection variants, and subtle differences between [ ] and [[ ]] - that are easy to get wrong from memory. This Skill puts the full Bash 5.3 reference at your fingertips so scripts are written correctly the first time. ## Core Features & Use Cases - Complete syntax lookup: Covers quoting, parameter expansions, redirections, compound commands, test operators, arrays, arithmetic, traps, set/shopt options, builtins, and shell variables. - Quick-reference tables: Scannable tables for the most-used constructs (parameter expansion forms, test operators, redirection syntax, prompt escapes) plus a catalog of common mistakes like unquoted variables, subshell variable loss, and set -e exceptions. - Deep-dive reference files: Seven topic files (syntax, expansions, redirections, builtins, variables, features, job control/readline/history) loaded on demand for full detail and edge cases. - Use Case: While reviewing a deployment script, you are unsure whether ${var:-default} or ${var-default} is correct, and whether cmd | head propagates the exit status - look up the exact semantics and fix the script before shipping. ## Quick Start Ask the assistant to check or write a Bash script, for example: review this backup script for quoting and error-handling bugs using the Bash reference.
