JACK

A versatile CLI tool for common developer tasks.

Usage

UUIDs

UUID Generation

Generate one or more UUIDs or ULIDs using the generate subcommand.

jack uuid generate
jack uuid generate --count 5 --type ULID

Validate UUID/ULID

Validate a single UUID or ULID value using the validate subcommand.

jack uuid validate <uuid>
echo "3fa85f64-5717-4562-b3fc-2c963f66afa6" | jack uuid validate
jack uuid validate --type ULID <ulid>

Lorem Ipsum

Generate placeholder text.

jack lorem --count 50

QR Codes

Generate a QR code image from text or a URL.

jack qr "https://github.com" --output github.png
jack qr "Hello World" --foregroundColor FF0000 --backgroundColor FFFFFF

Hashing

Compute hashes for strings or files.

jack hash "my secret string" --algorithm SHA256
jack hash --file path/to/file.txt --algorithm MD5

Timestamps

Get the current Unix timestamp.

jack timestamp
jack timestamp --unit MILLISECONDS

JWT Decoding

Decode and pretty print a JWT token.

jack jwt "your.jwt.token"
jack jwt "your.jwt.token" --secret "your-secret"

JSON Formatting

Verify and pretty print JSON input.

jack json '{"name":"jack","version":1}'
jack json --file data.json --indent 2
cat data.json | jack json

Installation

Quick Install (Recommended)

Linux / macOS:

curl -fsSL https://raw.githubusercontent.com/dimeskigj/jack-cli/main/scripts/install.sh | bash

Windows (PowerShell):

iwr https://raw.githubusercontent.com/dimeskigj/jack-cli/main/scripts/install.ps1 -useb | iex

From Source

1. Clone the repository:

   git clone https://github.com/dimeskigj/jack-cli.git
   cd jack-cli

2. Build and install:

   ./gradlew installDist

3. Add the binary to your PATH. The binary is located at build/install/jack/bin.

Native Image

To build a standalone executable that doesn't require Java installed:

./gradlew nativeCompile

The executable will be located in build/native/nativeCompile.

From Releases

Download the latest archive from the releases page, extract it, and add the bin folder to your PATH.

Features

• UUID/ULID: Validation and bulk generation of unique identifiers.
• Lorem Ipsum: Customizable placeholder text.
• QR Codes: PNG generation with custom colors.
• Hashing: MD5, SHA1, SHA256, SHA512 support.
• Timestamps: Seconds or milliseconds.
• JWT Decoding: Pretty print header and payload with signature verification.
• JSON Formatting: Verify and pretty print JSON with custom indentation.

License

MIT