[email protected]:~/http/testcurl$ curl -sI http://nist.time.gov/timezone.cgi?UTC/s/0| awk -F': ' '/Date: /  {print $2}'

Mon, 24 Aug 2015 11:19:25 GMT

[email protected]:~/http/testcurl$ date -s "curl -sI http://nist.time.gov/timezone.cgi?UTC/s/0| awk -F': ' '/Date: /  {print $2}'"

date: invalid date `curl -sI http://nist.time.gov/timezone.cgi?UTC/s/0| awk -F\': \' \'/Date: /  {print }\''

[email protected]:~/http/testcurl$ date -s "`curl -sI http://nist.time.gov/timezone.cgi?UTC/s/0| awk -F': ' '/Date: /  {print $2}'`"

date: cannot set date: Operation not permitted

Mon Aug 24 19:20:00 CST 2015

[email protected]:~/http/testcurl$ sudo date -s "`curl -sI http://nist.time.gov/timezone.cgi?UTC/s/0| awk -F': ' '/Date: /  {print $2}'`"

[sudo] password for linux:

Sorry, try again.

[sudo] password for linux:

Mon Aug 24 19:20:09 CST 2015

[email protected]:~/http/testcurl$ sudo date -s "`curl -sI www.baidu.com| awk -F': ' '/Date: /  {print $2}'`"

[sudo] password for linux:

Wed Aug 26 13:48:49 CST 2015

[email protected]:~/http/testcurl$ curl -sI www.baidu.com

HTTP/1.1 200 OK

Date: Wed, 26 Aug 2015 05:49:09 GMT

Content-Type: text/html; charset=utf-8

Connection: Keep-Alive

Vary: Accept-Encoding

Set-Cookie: BAIDUID=5B78DC1DCE22807CBA79CEBA91B125CB:FG=1; expires=Thu, 31-Dec-37 23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com

Set-Cookie: BIDUPSID=5B78DC1DCE22807CBA79CEBA91B125CB; expires=Thu, 31-Dec-37 23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com

Set-Cookie: PSTM=1440568149; expires=Thu, 31-Dec-37 23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com

Set-Cookie: BDSVRTM=0; path=/

Set-Cookie: BD_HOME=0; path=/

Set-Cookie: H_PS_PSSID=16415_1428_14602_12868_16799_16904_17000_17004_12835_15582_12338_13932_16950_16968_16866; path=/; domain=.baidu.com

P3P: CP=" OTI DSP COR IVA OUR IND COM "

Cache-Control: private

Cxy_all: baidu+005986c4967689962c9f01e2f019a0d3

Expires: Wed, 26 Aug 2015 05:49:02 GMT

X-Powered-By: HPHP

Server: BWS/1.1

X-UA-Compatible: IE=Edge,chrome=1

BDPAGETYPE: 1

BDQID: 0xfc0fed0200000131

BDUSERID: 0

[email protected]:~/http/testcurl$ curl -sI www.baidu.com| awk -F': ' '/Date: /  {print $2}

> ^C

[email protected]:~/http/testcurl$ curl -sI www.baidu.com| awk -F': ' '/Date: /  {print $2}'

Wed, 26 Aug 2015 05:49:31 GMT