curl save file: command line download resources

Why do I need a proxy IP to download files?

Brothers engaged in network crawlers understand, directly with their own IP crazy download resources, light is the target site to pull the black, heavy is directly blocked IP segment. At this timeproxy IPIt's like wearing a cloak of invisibility - change your vest and keep working. For example, usingipipgoThe dynamic IP pool, which automatically switches export IPs each time it downloads, the target site presses to distinguish who is operating.

Second, curl basic operation speed

Remember this universal formula first:curl [parameters] download address > save path. For example, to download a picture to your desktop:

curl https://example.com/image.jpg > ~/Desktop/image.jpg

When you come across a large file, add a-Lparameters automatically follow the jump.-OThe parameters are saved directly with the filename on the server:

curl -L -O https://example.com/bigfile.zip

Third, to curl set proxy IP posture

Here's the point! On the command line, add a-xparameter will be able to take the proxy channel. Take theipipgoHTTP proxy as an example:

curl -x http://username:password@proxy.ipipgo.com:8000 https://target-site.com/file.txt

Note the substitution here:

• username: the account you registered with ipipgo
• password: the password of the corresponding account
• 8000: Specific proxy port number (different for each package)

Fourth, the essential skills of high-level players

Tip #1:Automatic IP switching during batch download
Write a shell script to call different proxy IPs in a loop, suggest using ipipgo'sDynamic Authorization Model, automatically changing IPs with each request:

for i in {1..10}
do
  curl -x http://动态认证信息@proxy.ipipgo.com:8000 http://target.com/file_$i.zip
done

Tip 2:Overtime Settings to Keep Safe
When you encounter a stuck connection add a-m 30(30 second timeout) to avoid script deadlocks:

curl -m 30 -x http://代理信息... 

V. First aid kits for common problems

Q: What should I do if the proxy IP suddenly fails to connect?
A: First check if the network is smooth, then use thecurl -vLook at the detailed error report. ipipgo proxy server supportMulti-territory node switching, changing the access point often fixes it.

Q：Can I resume the download if I get disconnected in the middle of the download?
A: curl comes with-C-The parameter is the breakpoint transmission god:

curl -C - -x Proxy information... Download

Q: How do I verify if the agent is in effect?
A: First use this command to check the current exit IP:

curl -x proxy info... https://api.ipipgo.com/current_ip

VI. Why choose ipipgo?

Having empirically compared a dozen agency services.ipipgoThere are three major kills:

• 🟢 Exclusive high-speed lines: download speeds more than 3 times faster than shared IPs
• 🟢 Real customer service 7 × 24 hours online: middle of the night out of the problem as usual seconds back!
• 🟢 Automatic IP cleaning technology: blocked IPs are automatically kicked out of the resource pool

Just registered and recommend to use firstExperience Package, new users get 1G of traffic enough to test. Come across a big project directly onEnterprise PackageIt supports launching 500 connections at the same time without lagging.