Linux system curl command

curl command

curl -I URL //-I: Omit the source code to view, the content is as follows:

We are looking at the line HTTP/1.1 200 OK

Are there common states: 200 301 302 404 403 502 503

Among the above status codes, only 200 is OK

If 301 302 appears, it may be because a jump is set on the server side, the content is as follows:

The above picture shows the HTTP/1.1 301 setting Jump to the following: Location: http://www.aminglinux.com/bbs/forum.php

-x You can specify the ip and port, omitting to write hosts:

curl -x ip:port (port ) URL -I

curl -x61.135.157.156:80 www.qq.com -I

//( -I is used to only view the status code, not the source code, -x: proxy)

curl -Iv www.baidu.com //v: Display detailed information

User-Agent here: represents an identifier of the browser

curl -O URL (to download pictures) URL) //-O: Directly download the page or object

curl -o Custom name URL (the URL to download the image) //-o: Rename

curl -u user:password http:// 123.com //-u : Username and password can be specified

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