1) Create a file called performance-format.txt and add the below content.
url_effective: %{url_effective}\n
http_code: %{http_code}\n
content_type: %{content_type}\n
time_namelookup: %{time_namelookup}\n
time_connect: %{time_connect}\n
time_appconnect: %{time_appconnect}\n
time_pretransfer: %{time_pretransfer}\n
time_redirect: %{time_redirect}\n
time_starttransfer: %{time_starttransfer}\n
----------\n
time_total: %{time_total}\n
Below are the details of the used parameters, you can refer more on [1] and [2].
[1] https://curl.haxx.se/docs/manpage.html
[2] http://www.mit.edu/afs.new/sipb/user/ssen/src/curl-7.11.1/docs/curl.html
- url_effective The URL that was fetched last.
- http_code The numerical code that was found in the last retrieved HTTP(S) page.
- time_connect The time, in seconds, it took from the start until the TCP connect to the remote host (or proxy) was completed
- time_appconnect The time, in seconds, it took from the start until the SSL/SSH/etc connect/handshake to the remote host was completed.
- time_pretransfer The time, in seconds, it took from the start until the file transfer was just about to begin. This includes all pre-transfer commands and negotiations that are specific to the particular protocol(s) involved.
- time_redirect The time, in seconds, it took for all redirection steps including name lookup, connect, pretransfer and transfer before the final transaction was started. time_redirect shows the complete execution time for multiple redirections.
- time_starttransfer The time, in seconds, it took from the start until the first byte was just about to be transferred. This includes time_pretransfer and also the time the server needed to calculate the result.
- time_total The total time, in seconds, that the full operation lasted.
2) Now run the below sample command:
curl -v http://www.google.com -w "@performance-format.txt" -o test1.txt
3) We will get the details as below and also the response will be saved in test1.txt.
sh-4.3$ curl -v http://www.google.com -w "@performance-format.txt" -o test1.txt
* Rebuilt URL to: http://www.google.com/
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0* Trying 216.58.197.68...
* Connected to www.google.com (216.58.197.68) port 80 (#0)
> GET / HTTP/1.1
> Host: www.google.com
> User-Agent: curl/7.43.0
> Accept: */*
>
< HTTP/1.1 302 Found
< Cache-Control: private
< Content-Type: text/html; charset=UTF-8
< Referrer-Policy: no-referrer
< Location: http://www.google.co.in/?gfe_rd=cr&ei=LH-aWayrBMKL8Qez7J6ADw
< Content-Length: 261
< Date: Mon, 21 Aug 2017 06:35:24 GMT
<
{ [261 bytes data]
100 261 100 261 0 0 4812 0 --:--:-- --:--:-- --:--:-- 4745
* Connection #0 to host www.google.com left intact
url_effective: http://www.google.com/
http_code: 302
content_type: text/html; charset=UTF-8
time_namelookup: 0.030
time_connect: 0.041
time_appconnect: 0.000
time_pretransfer: 0.042
time_redirect: 0.000
time_starttransfer: 0.054
----------
time_total: 0.054
sh-4.3$
That's it...
