我想從如下內容中提取url:{"code":0,"data":{"cdnFileUrl":"http://download.example.com.cn/download/product/mi/rules/example_url_201902123.pkg","code":0,"message":"success","packageVersion":"20190219141705"},"message":"success"}使用如下命令可以得到正確結果：catinfo1.txt|grep-Po'"cdnFileUrl":"[0-9a-zA-Z/-:._]+"'|awk-F'"''{print$(NF-1)}'http://download.example.com.cn/download/product/mi/rules/example_url_201902123.pkg可是現(xiàn)在對接的部門更改了連接形式，在鏈接中加了個問號，我搜了下問號應該要特殊處理，但是不知道如何搞，更改后的信息如下：{"code":0,"data":{"cdnFileUrl":"http://download.example.com.cn/download/product/mi/rules/example_url_201902123.pkg?secret3u4o3dbhj","code":0,"message":"success","packageVersion":"20190219141705"},"message":"success"}那么如何提取出來http://download.example.com.cn/download/product/mi/rules/example_url_201902123.pkg?secret3u4o3dbhj