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I know that part of the terminal output is duration of the request, time remaining, etc. But is there some documentation that specifies exactly what each column of the terminal output of a curl command is? The man page is very sparse as to what is there.
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Client URL (cURL, pronounced “curl”) is a command line tool that enables data exchange between a device and a server through a terminal. Using this command line interface (CLI), a user specifies a server URL (the location where they want to send a request) and the data they want to send to that server URL.
Curl writes all cookies previously read from a specified file and all cookies received from remote server(s). If no cookies are known, no file will be written. The file will be written using the Netscape cookie file format. If you set the file name to a single dash ("-"), the cookies will be written to stdout.
Most Linux distributions have cURL installed by default. To check whether it is installed on your system or not, type curl in your terminal window and press enter. If it isn't installed, it will show a “command not found” error.
It is possibly not easy to find, but it is documented in the curl book.
The progress meter exists to show a user that something actually is
happening. The different fields in the output have the following meaning:
% Total % Received % Xferd Average Speed Time Curr.
Dload Upload Total Current Left Speed
0 151M 0 38608 0 0 9406 0 4:41:43 0:00:04 4:41:39 9287
From left-to-right:
% - percentage completed of the whole transfer
Total - total size of the whole expected transfer
% - percentage completed of the download
Received - currently downloaded amount of bytes
% - percentage completed of the upload
Xferd - currently uploaded amount of bytes
Average Speed
Dload - the average transfer speed of the download
Average Speed
Upload - the average transfer speed of the upload
Time Total - expected time to complete the operation
Time Current - time passed since the invoke
Time Left - expected time left to completion
Curr.Speed - the average transfer speed the last 5 seconds (the first
5 seconds of a transfer is based on less time of course.)
The -# option will display a totally different progress bar that doesn't
need much explanation!
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