2010-10-22 awk http://www.google.co.jp/search?hl=ja&rlz=1G1GGLQ_JAJP260&q=awk&aq=f&aqi=g9g-r1&aql=&oq=&gs_rfai=http://www.ibm.com/developerworks/jp/linux/library/l-awk1/?cmp=dw&cpb=dwlin&ct=dwnew&cr=dwnja&ccy=jp&csr=102210