Update visual-ops.md #259

	name: create-index

	on:
	push:
	branches: [ master ]

	jobs:
	update:
	runs-on: ubuntu-20.04
	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	- name: update
	env:
	GITHUB_TOKEN: ${{ secrets.TOKEN }}
	run: \|
	sed -i '/<!-- marker -->/,$ d' README.md

	(
	echo '<!-- marker -->'

	for directory in cheat-sheet examples; do
	oldgroup=
	printf "\n## %s Index\n\n" $(echo "$directory" \| sed -e "s/\b$.$/\u\1/g")

	while IFS=/ read -r dot group file; do
	name="$(basename "$file" .md)"

	if [ "$oldgroup" != "$group" ]; then
	echo "<br/><span class='group'><b>$group</b></span>"
	oldgroup="$group"
	fi

	echo " \| <a class='topic' href='https://lzone.de/$directory/$name'>$name</a>"
	done < <(cd $directory/ && find . -mindepth 2 -name "*.md" \| sort)
	done
	) >>README.md

	git config user.email "[email protected]"
	git config user.name "Create Index Workflow"
	git commit -m "Update index." README.md \|\| exit 0
	git push

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