Curl Command in Linux with Examples

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The curl command in Linux is one of those tools that looks simple on the surface but has surprising depth once you start using it regularly. Most people know it as “that command to download a file,” but sysadmins rely on it daily for testing APIs, debugging HTTP headers, uploading data, checking SSL certificates, and… continue reading.
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I use curl occasionally. The most frequent use is for setting up the Liquorix kernel; their site, https://liquorix.net uses the following command to install the Liquorix repository on Debian, Ubuntu and Arch Linux distributions:

curl -s ‘https://liquorix.net/install-liquorix.sh’ | sudo bash
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