usage: markdown_tool.py [-h] [-a] [-d IMAGES_DIRNAME] [-f] [-o OUTPUT_PATH]
                        [-p IMAGES_PUBLIC_DIR] [-s SKIP_LIST]
                        [-t DOWNLOADING_TIMEOUT] [-D]
                        [-I {md,html,md+html,html+md}] [-O {md,html}] [-R]
                        [--encoding ENCODING]
                        [--output-postfix OUTPUT_POSTFIX]
                        [--skip-on-existing-filename]
                        [--use-article-name-as-images-dir] [--version]
                        article_file_path_or_url

Simple script to download images and replace image links in markdown
documents.

positional arguments:
  article_file_path_or_url
                        path to the article file in the Markdown format

optional arguments:
  -h, --help            show this help message and exit
  -a, --skip-all-incorrect
                        skip all incorrect images
  -d IMAGES_DIRNAME, --images-dirname IMAGES_DIRNAME
                        Relative directory name to the output path to store
                        images
  -f, --overwrite       Overwrite existing files
  -o OUTPUT_PATH, --output-path OUTPUT_PATH
                        specified article output file name; will override "--
                        output-postfix"
  -p IMAGES_PUBLIC_DIR, --images-public-dir IMAGES_PUBLIC_DIR
                        Absolute path to store all images; will override "--
                        images-dirname" and "--use-article-name-as-images-
                        dir"; note that output file will still use relative
                        paths in light of markdown portability.
  -s SKIP_LIST, --skip-list SKIP_LIST
                        skip URL's from the comma-separated list (or file with
                        a leading '@')
  -t DOWNLOADING_TIMEOUT, --downloading-timeout DOWNLOADING_TIMEOUT
                        how many seconds to wait before downloading will be
                        failed
  -D, --dedup-with-hash
                        Deduplicate images, using content hash
  -I {md,html,md+html,html+md}, --input-format {md,html,md+html,html+md}
                        input format
  -O {md,html}, --output-format {md,html}
                        output format
  -R, --remove-source   Remove or replace source file
  --encoding ENCODING   File encoding.
  --output-postfix OUTPUT_POSTFIX
                        postfix for article output file name
  --skip-on-existing-filename
                        skip on existing filename
  --use-article-name-as-images-dir
                        Use article file name as the folder name to store
                        images, will override "--images-dir-name"
  --version             return version number

./markdown_tool.py nc-1-zfs/article.md

./markdown_tool.py not-nas/sov/article.md -O html -s "http://www.ossec.net/_images/ossec-arch.jpg" -a

find content/ -name "*.md" | xargs -n1 ./markdown_tool.py