extract-markdown-code-blocks

#!/bin/bash

set -e

main() {
  file=$1
  enforce_usage $file
  extract_code_and_markers | trim_code_markers
}

enforce_usage() {
  if [ -z $1 ]; then
    echo "Usage: $0 file_with_markdown_code.txt"
    exit 1
  fi
}

extract_code_and_markers() {
  sed -n '/```/,/```/p' $file
}

trim_code_markers() {
  sed '/```/d'
}

main $1