Using cURL to download files: cURL file download tutorials

Teach you how to use cURL to grab files by hand

If you're a web developer, you're going to have to deal with the command line. Today's focus on nagging cURL this tool, especially with the use of proxy IP when the small ways. Don't be intimidated by those complex parameters, in fact, the daily operation of the three axes, mastered well to solve the download needs of 90%.

What is a proxy IP for?

Let's take a realistic example: you take a high speed train and use your cell phone to download a movie, only to find that the website limits the speed. If you use a proxy IP at this time, it is equivalent toChange network outlets.The proxy service from ipipgo has been tested to bypass bandwidth limitations in certain areas, especially their dynamic residential IPs, which are very well disguised.

 Basic download commands (bare bones version)
curl -O http://example.com/file.zip

 Add proxy version (wearing a vest)
curl -x http://user:pass@proxy.ipipgo.cc:8080 -O http://example.com/file.zip

Real-world configuration details

Focus on these three potholes:

1. Proxy address do not write the wrong port, ipipgo home default is 8080 and 8888 two kinds of
2. Encountering HTTPS sites to add-proxy-insecureparameters
3. Windows system paths remember to wrap them in double quotes

Common Rollover Scene QA

Q: What can I do if the agent can't connect?
A: First check the account password is not copied more spaces, ipipgo background can real-time check the remaining traffic

Q: What should I do if I get disconnected in the middle of the download?
A: Plus-C-Parameters continue to breakpoint download, with ipipgo's stabilized agent better results

Q: How do I measure proxy speed?
A: First withcurl -x proxy address -o /dev/null -w "%{speed_download}" file URLTake a speed test.

Private Debugging Tips

When you come across a stubborn site, slip a-vParameters to see the detailed communication process. Once with ipipgo Japanese node under the anime resources, found that the response code 403, plus User-Agent disguised as an ordinary browser immediately fixed.

 Advanced masquerading templates
curl -x http://ipipgo.proxy:8080
-H "User-Agent: Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36"
-H "Accept-Language: zh-CN"
-O http://target.com/data.rar

Lastly, the choice of proxy service depends on the actual needs. Like ipipgo can be purchased on an hourly basis is more flexible, newcomers are recommended to take a free trial package to practice first. Encounter technical problems directly to their customer service, the response speed than some of the big companies much faster.