$ su p busybox2 wget -s
http://baidu.comConnecting to baidu.com (220.181.57.217:80)
$ su p busybox2 wget
BusyBox v1.20.0 (2012-08-22 21:36:24 CDT) multi-call binary.
Usage: wget [-c|--continue] [-s|--spider] [-q|--quiet] [-O|--output-document FILE]
[--header 'header: value'] [-Y|--proxy on/off] [-P DIR]
[--no-check-certificate] [-U|--user-agent AGENT] [-T SEC] URL...
Retrieve files via HTTP or FTP
-s Spider mode - only check file existence
-c Continue retrieval of aborted transfer
-q Quiet
-P DIR Save to DIR (default .)
-T SEC Network read timeout is SEC seconds
-O FILE Save to FILE ('-' for stdout)
-U STR Use STR for User-Agent header
-Y Use proxy ('on' or 'off')
$