sed从html页面提取链接

Question

我想写一个模块上传犁但我有解析上传页面的问题。

我需要提取UPLOAD_URL

<script type="text/javascript"> 

    upload_url: "http://s73.domain.com/?action=uploadfiles&user_id=TVRnN21ESX2c&secret_code=f4r6w35q639ih7oi62u674ae91453697", // Relative to the SWF file (or you can use absolute paths) 

我登录后，我加载页面进行上传，然后我需要提取UPLOAD_URL

我尝试：

'upload_url:' '"\([[:digit:]]|http[:]//[^ ])*' 

，但我得到此错误

sed: -e expression #1, char 60: Unmatched (or \(

Answer 1

sed的：

sed -nE 's/.*upload_url: "([^"]+).*/\1/p' filename 

输出：

http://s73.domain.com/?action=uploadfiles&user_id=TVRnN21ESX2c&secret_code=f4r6w35q639ih7oi62u674ae91453697 

的grep：

grep -oP 'upload_url: "\K[^"]+' filename 

AWK：

awk -F "\"" '/upload_url/ {print $2}' filename