Curl is a command-line utility for transferring data to or from a remote server. It allows you to download or upload data using HTTP, HTTPS, SCP, SFTP and FTP protocols.
If you try to download files using curl And you get an error message that says curl command not found, Which means the curl package is not installed on your CentOS system.
This guide describes how to install and use commands curl On CentOS 8.
Install Curl on CentOS
Deal curl Located in the default CentOS 8 repository, to install it, run the following command:
sudo dnf install curl
To check it out curl Installed, type curl At the terminal and press Enter:
curl
The command will print the following output:
curl: try 'curl --help' or 'curl --manual' for more information
At this point, you have successfully installed curl on your Debian machine, and you can start using it.
Start using Curl
When used without any options, curl will print the specified URL source code as an argument for standard output, for example:
curl https://example.com
To download files with curl, use the -o or -O.
Selection -o (The letter o in lowercase) allows you to specify the name of the saved file
curl -o linux.tar.xz https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.0.5.tar.xz
Selection -O (Capital o) will save the file with its original name:
curl -O https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.0.5.tar.xz
Another useful feature of Curl is its ability to display HTTP headers from a specified URL:
curl -I https://www.centos.org/
HTTP/1.1 200 OK Date: Thu, 13 Feb 2020 22:01:04 GMT Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips Strict-Transport-Security: max-age=31536000 X-Frame-Options: SAMEORIGIN X-Xss-Protection: 1; mode=block X-Content-Type-Options: nosniff Referrer-Policy: same-origin Last-Modified: Thu, 06 Feb 2020 17:21:08 GMT ETag: "5421-59deb7fadfdfd" Accept-Ranges: bytes Content-Length: 21537 Content-Type: text/html; charset=UTF-8
With Curl, you can also download files from a password-protected FTP server:
curl -u FTP_USERNAME:FTP_PASSWORD ftp://ftp.example.com/file.tar.gz
Conclusion
Curl is a versatile tool that allows you to send and receive data over the network. Installing Curl on Debian is a fairly simple task.
For more information on how to use this tool, visit Examples of Curl Command
.