Wiktionary

• Parsing raw compressed dump file. Example to extract the title of all pages().
  bzcat pages-articles.xml.bz2 | grep '<title>[^[:space:][:punct:]]*</title>' | sed 's:.*<title>\(.*\)</title>.*:\1:'
  https://stackoverflow.com/questions/3364279/has-anyone-parsed-wiktionary/9735019
• Regular expression which include unicode characters. For instance if Arabic,
  ^[\p{Arabic}\s\p{N}]+$
  https://stackoverflow.com/questions/29729391/regular-expression-arabic-characters-and-numbers-only