cURL output to file
This output is sent to stderr. So, to get it all you need is redirect stream 2 (stderr) to a file as
curl -o responseFile.html http://www.somewhere.com 2> informationFile.txtBut, as your capture shows, times are not always included.
The better option to know if the request succeded and how long it took is to ask curl to output some internal variables. This is done with the -w switch. So, your command should look as
curl -o responseFile.html http://www.somewhere.com -w "%{response_code};%{time_total}" > dataFile.txt 2> informationFile.txtThat way, the response will go to responseFile.html (or whatever you need), the progress information (stderr or stream 2) will go to informationFile.txt and the required request response code and time information will go to dataFile.txt