SED³æ¦æ¸}¥»§Ö³t°Ñ¦Ò http://idobest.pixnet.net/blog/post/22039536-%5B%E8%BD%89%E8%B2%BC%5D-sed%E5%96%AE%E8%A1%8C%E8%85%B3%E6%9C%AC%E5%BF%AB%E9%80%9F%E5%8F%83%E8%80%83 SED - Numbering lines http://en.kioskea.net/faq/926-sed-numbering-lines