Generate UUIDs with uuidgen on Linux

**Generate UUIDs with uuidgen on Linux**

Introduction A universally unique identifier (UUID) is a 128-bit value standardized under RFC 4122 and commonly used to uniquely identify resources across systems. The uuidgen command generates RFC 4122-compliant UUIDs from the command line and is provided by the uuid-runtime package on Debian and Ubuntu and by util-linux on RHEL, Fedora, and CentOS Stream. This article covers UUID versions (random, time-based, and namespace-based), installation on major Linux distributions, using uuidgen in shell scripts, and alternative methods to generate UUIDs on Linux. Key Takeaways A UUID is a 128-bit identifier in 8-4-4-4-12 hexadecimal format, defined by RFC 4122. uuidgen with no flags produces a random (Version 4) UUID on most modern Linux systems...

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