Introduction

Naive terminal variables manager.

https://sw.cowtech.it/yuna

Features

• Store and retrieve variables in YAML format
• Hierarchical configuration with automatic parent directory merging
• Variable interpolation with {variable} or {{variable}} syntax
• Support for nested objects and arrays
• Clean table output with source tracking
• Simple command-line interface

Installation

Prebuilt Binaries

Download one of the prebuilt binaries for your platform, then make it executable:

• Linux
• macOS (Intel)
• macOS (Apple Silicon)
• Windows

Example:

curl -L -o yuna https://github.com/ShogunPanda/yuna/releases/latest/download/yuna-linux 
chmod a+x yuna

From Source (Cargo)

If your platform is not available or you prefer to build from source, ensure you have Rust installed, then run:

cargo install yuna

Usage

Basic Commands

# List all variables in the current directory and parent directories 
yuna 
 
# Set a variable 
yuna my_var "some value" 
 
# Set a variable with multiple words (they will be joined with spaces) 
yuna greeting Hello World from Yuna 
 
# Get a variable value 
yuna my_var 
 
# Delete a variable 
yuna -d my_var 
# or 
yuna --delete my_var 
 
# Show version 
yuna -V

Configuration Files

Yuna stores variables in YAML files (.yuna.yml by default). The tool automatically:

• Creates a .yuna.yml file in the current directory when you save a variable
• Searches for and merges .yuna.yml files from all parent directories up to the root
• Shows which file each variable comes from in the listing

Nested Variables

You can work with nested structures using dot notation:

# Set nested object values 
yuna database.host localhost 
yuna database.port 5432 
yuna database.name myapp 
 
# Set array values 
yuna servers.0 "server1.example.com" 
yuna servers.1 "server2.example.com" 
 
# Read nested values 
yuna database.host

Variable Interpolation

Variables can reference other variables using {var} or {{var}} syntax:

# Set base variables 
yuna base_url "https://api.example.com" 
yuna api_version "v1" 
 
# Use interpolation 
yuna api_endpoint "{base_url}/{api_version}" 
 
# When reading api_endpoint, it will show: https://api.example.com/v1 
yuna api_endpoint

Command-Line Options

Options: 
  -c, --config   Configuration file name [default: .yuna.yml] 
  -d, --delete           Delete a variable 
  -n, --no-merge         Do not merge with configuration files in parent folders 
  -r, --raw              Do not perform variable interpolation 
  -V, --version          Print version 
  -h, --help             Print help

Output Format

When listing variables, Yuna displays a formatted table showing:

• Name: Variable name (cyan)
• Value: Raw value as stored (green)
• Raw: Value with interpolation applied (or raw if -r flag is used)
• Source: File where the variable is defined (grey)

How It Works

File Hierarchy and Merging

When you run Yuna, it searches for configuration files starting from the root directory down to your current directory, loading each .yuna.yml file it finds. Values from files closer to your current directory override those from parent directories. This allows for:

• Global settings at the root level
• Project-specific overrides in project directories
• Local development overrides in subdirectories

Example directory structure:

/ 
-‌-‌-‌ .yuna.yml                 # Global variables 
-‌-‌-‌ projects/ 
|‌   -‌-‌-‌ .yuna.yml             # Project-wide variables 
|‌   -‌-‌-‌ my-app/ 
|‌       -‌-‌-‌ .yuna.yml         # App-specific variables 
|‌       -‌-‌-‌ src/ 
|‌           -‌-‌-‌ .yuna.yml     # Source-specific variables

Data Types

Yuna supports all YAML data types:

• Strings: Simple text values
• Numbers: Integer and floating-point values
• Booleans: true/false values
• Arrays: Ordered lists accessible via numeric indices
• Objects: Nested key-value pairs accessible via dot notation
• Null: Empty values

Variable Priority

When the same variable is defined in multiple configuration files:

1. Files are loaded from root to current directory
2. Later values override earlier ones
3. Nested objects are merged recursively
4. Arrays are concatenated when merging

Contributing to yuna

• Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet
• Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it
• Fork the project
• Start a feature/bugfix branch
• Commit and push until you are happy with your contribution
• Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.

Copyright

Copyright (C) 2021 and above Shogun (shogun@cowtech.it).

Licensed under the MIT license, which can be found at https://choosealicense.com/licenses/mit.