Markdown lint... next step is to "lint" the English with spell check, grammar check

check_markdown.sh

#!/bin/bash
# npm install tidy-markdown@2.0.4 -g
# npm install -g markdownlint-cli

echo "running tidy-markdown (a node.js package)"
tidy-markdown<README.md >README.fix.md
rm README.md
mv README.fix.md README.md

echo "running markdownlint (a node.js package)"
markdownlint '**/*.md' --ignore node_modules
retVal=$?
if [ $retVal -ne 0 ]; then
	echo Failed
	kill -INT $$
	return
fi

# pip install Markdown
echo "Checking if the file can be parsed into HTML"
markdown_py README.md
retVal=$?
if [ $retVal -ne 0 ]; then
	echo Failed
	kill -INT $$
	return
fi

# pip install Markdown2
echo "Checking if the file can be parsed into HTML, alternative parser"
markdown2 README.md
retVal=$?
if [ $retVal -ne 0 ]; then
	echo Failed
	kill -INT $$
	return
fi

# pip install Commonmark
echo "Checking if the file can be parsed into HTML, Commonmark parser"
cmark README.md
retVal=$?
if [ $retVal -ne 0 ]; then
	echo Failed
	kill -INT $$
	return
fi