grep -rl matchstring test/ | xargs sed -i 's/bbb/xxx/g'
sed -i "s/http:\/\/www.yichedai.com/http:\/\/www.bjytxa.com/g" `grep http:\/\/www.yichedai.com -rl WebContent/`
sed -i "s/http:\/\/www.yichedai.com/http:\/\/www.bjytxa.com/g" `grep http:\/\/www.yichedai.com -rl WebContent/`