A simple markdown converted to Wiki formating using SED

markdownd_to_wiki.sh

#!/bin/bash

cat "$1" |
  # code block tags 
  sed -E 's/(~~~|```)([a-z]+)/<pre><code class="\2">/g' |
  sed -E 's|(~~~\|```)|</pre></code>|g' |
  # inline code tag 
  sed -E 's/`(.*)`/@\1@/g' |
  # italic tag
  sed -E 's/\*/_/g' |
  # bold tag
  sed -E 's/__/\*/g' |
  # replace title tag
  sed -E 's/#+ (.*)/\+\*\1\*\+/g' |
  # list
  sed -E 's/_ /\* /g'