🛠 UUIDy

uuidy (pronounced "you-you-eye-dee") is a simple and efficient Command-Line Interface (CLI) for generating and managing UUIDs. By default, the tool generates UUIDs of Version 4, but it supports a wide range of UUID versions and additional functionality for parsing and working with UUIDs.

Features

• Generate UUIDs of various versions: V1, V3, V4, V5, V6, and V7
• Parse and validate UUIDs
• Support for generating multiple UUIDs at once

Why is this Tool Useful?

It simplifies tasks across various use cases:

• Quick Generation: Instantly create UUIDs for ad-hoc tasks.
• Automation-Friendly: Easily integrate into scripts, CI/CD pipelines, and automated workflows.
• Cross-Platform: Works consistently across different operating systems and environments.
• Validation: Quickly parse and verify UUIDs to ensure correctness and data integrity.

Ideal for developers and system administrators that need a lightweight, efficient, and always accessible tool for working with UUIDs.

Installation

Install using Go

go install github.com/legaard/uuidy@latest

or Homebrew

brew install legaard/tap/uuidy

Usage

Run the uuidy command to generate a single V4 UUID by default:

uuidy

Output:

835222e6-37b8-458f-b82c-d391b0401ec8

Commands

UUID Commands

• null Outputs the null UUID.

  uuidy null

• parse Parses and validates a given UUID string.

  uuidy parse e4eaaaf2-d142-11e1-b3e4-080027620cdd

• v1 Generates a Version 1 (timestamp-based) UUID.

  uuidy v1

• v3 Generates a Version 3 (namespace-based, MD5 hash) UUID.

  uuidy v3 "some value"

• v4 Generates a Version 4 (random) UUID.

  uuidy v4

• v5 Generates a Version 5 (namespace-based, SHA-1 hash) UUID.

  uuidy v5 "some value"

• v6 Generates a Version 6 UUID.

  uuidy v6

• v7 Generates a Version 7 UUID.

  uuidy v7

Additional Commands

• help Displays help information about any command.

  uuidy help

• version Prints the current version of the CLI.

  uuidy version

Examples

Generate Multiple UUIDs

uuidy v7 -n 5

Ouput:

01947961-e155-7a32-82f1-1b2491f301ac
01947961-e155-7a33-ae7b-2a409d7388ab
01947961-e155-7a34-b168-c1a743900b1e
01947961-e155-7a35-b87a-71833dc172fc
01947961-e155-7a36-8374-9ecb5b7c0675

Generate UUID with custom namespace

uuidy v5 --namespace 869d7b84-d678-11ef-91a1-426648c33d81 "some value"

Ouput:

e21ac596-de47-5afa-a4c6-009662c4b663

Generate UUID with custom epoch

uuidy v7 --epoch 2025-01-18T13:10:05+01:00

Ouput:

01947952-0148-73d4-bca8-095cd1891884

Parse a UUID

uuidy parse 2733f45e-d595-11ef-b95f-426648c33d81

Ouput:

version: 1
time: 2025-01-18T13:10:05.633443+01:00