Downloading Files with curl: Command Line Resource Fetching

Teach you to play with proxy IP curl downloads

Recently found a lot of small partners in the use of curl download resources always encounter turtle speed or be limited, today we will nag how to use the proxy IP this magic weapon to crack these problems. To give a chestnut, just like you online shopping is always limited, change a shipping address can continue to buy buy buy, proxy IP is the reason.

Why do I need a proxy IP to download?

Many websites have set upDownload Frequency Limit, just like the supermarket limiting the purchase of toilet paper. When you download continuously with a real IP, it may be:

• The speed limit is a snail's crawl.
• Just cut the connection.
• blackout IP address

At this time the proxy IP provided by ipipgo is like a spare cell phone number, you can continue to download happily with a different IP. Their IP pool is big enough that they are not afraid of being blocked at all.

curl basic download posture

Let's review the basic operation of curl first:

 Ordinary Download
curl -O http://example.com/file.zip

 Limit rate download (limit 100KB/s)
curl --limit-rate 100k -O http://example.com/largefile.iso

The right way to open a proxy IP

Here's the kicker! Adding proxy parameters to curl is like changing the delivery route for a courier guy:

curl -x http://用户名:密码@proxy IP:port -O http://目标网站.com/file.rar

Take a real case:

 Example of a proxy using ipipgo
curl -x http://user123:pass456@45.76.189.22:8080 -O http://download.site/bigfile.tar.gz

Practical Tips and Tricks

1. Automatic IP switching: Use ipipgo's API to get new IP in real time, with scripts to realize automatic IP change when download fails.

! /bin/bash
while true; do
  Proxy IP = $(curl -s api.ipipgo.com/getip)
  curl -x $ proxy IP -O http://target/file && break
done

2. Multi-threaded downloads: Use the proxy with aria2c and the speed takes off straight away!

aria2c --all-proxy=http://代理IP:端口 http://mirror.site/ubuntu.iso

Frequently Asked Questions QA

Q: What should I do if my proxy IP is not working after I use it?
A: It is recommended to use ipipgo's dynamic residential IP, their IP survival time is more durable than the milk tea store's pearls, and comes with an automatic replacement function.

Q: How do I test if the proxy is working?
A: Check the IP with this command first:

curl -x proxy IP:port https://api.ipify.org

If the displayed IP is a proxy IP, it means it is successful.

Q：Can I resume the download if I get disconnected in the middle of the download?
A: curl comes with a continuation function, plus-C-Parameters are fine:

curl -x proxy IP -C - -O http://example.com/bigfile.zip

Why do you recommend ipipgo?

• Exclusive bandwidth without toothpaste
• Nodes in 200+ cities nationwide
• Support HTTP/HTTPS/Socks5 protocols
• 24-hour technical customer service returns work orders in seconds

Recently, they have been running an event where new users get 1G of free traffic for signing up, which is enough to download dozens of HD documentaries. If you need to use it for a long time, we recommend you to choose the annual package, which is only a few cents per day.

Finally remind, download resources to comply with site regulations, do not use scripts crazy. Reasonable use of proxy IP, can improve efficiency but will not add blockage to the server, this is the real technology player posture ~!