$ wget -O - http://d.hatena.ne.jp/keyworddiary/ %a4%a4%a4%cc%a4%ab%a4%df%a4%c3%a1%aa?date=20060426 > inu.out $ wget -O - http://d.hatena.ne.jp/keyworddiary/ %a4%a4%a4%cc%a4%ab%a4%df%a4%c3%a1%aa?date=20060427 >> inu.out $ grep hatena-with-icon inu.out | sort >inu.list $ wget -O - http://d.hatena.ne.jp/keyworddiary/ %c2%ee%b5%e5?date=20060426 > tak.out $ wget -O - http://d.hatena.ne.jp/keyworddiary/ %c2%ee%b5%e5?date=20060427 >> tak.out $ grep hatena-with-icon tak.out | sort >tak.list $ comm -1 -2 inu.list tak.list | sed 's|.*href="/\([[:alnum:]_-]*\)/\([[:digit:]]*\).*|id:\1:\2|' | sort -t: -k3 -k2f