Bash Helper — Explain, Warn, Fix

A bash helper that walks through your script line by line, explains what each block does, and flags any construct that could bite you at runtime.

Example: what the helper explains

trap "rm -f /tmp/$" EXIT     # cleans temp on script exit
set -euo pipefail             # fail fast on error, unset var, pipe fail
IFS=
#39;\n\t'                   # safer word splitting

Line-by-line explanations

Every non-trivial construct gets a plain-English explanation: what a `trap` handler will do, when `set -e` fires (and when it silently doesn't), why `IFS` reassignment matters. Great for onboarding onto a legacy shell codebase.

Warnings the helper surfaces

Unquoted expansions, missing null-glob handling, `[ ]` vs `[[ ]]` traps, subshell state loss, missing `--` end-of-options markers, and every ShellCheck rule the pattern maps to.

How it fits your workflow

Paste in the browser during code review, or copy the JSON export into a PR comment. The helper is read-only — it never modifies your files.

Frequently asked questions

Does the bash helper run the script?
Never. All output is derived from static analysis of the text you paste.
Can I export the explanations?
Yes — export as PDF, Markdown, or raw JSON via the results toolbar.
Does it work for POSIX sh?
Yes. When it detects a `#!/bin/sh` shebang, it flags Bash-only constructs (`[[`, arrays, process substitution).