通过shell实现中文urlencode和urldecode
编码
echo '上海' | tr -d '\n' | xxd -plain | sed 's/\(..\)/%\1/g'
%e4%b8%8a%e6%b5%b7
解码
url="http://www.baidu.com?param=%e4%b8%8a%e6%b5%b7"
printf $(echo -n $url | sed 's/\\/\\\\/g;s/\(%\)\([0-9a-fA-F][0-9a-fA-F]\)/\\x\2/g')"\n"
http://www.baidu.com?param=上海
