Generate

Generate random test data including text, numbers, UUIDs, and structured formats. Use when creating mock datasets, sample records, or randomized test inputs.

Generate — Universal Data Generator

A versatile CLI tool for generating random data of various types. Produce text, numbers, UUIDs, dates, names, emails, addresses, and structured formats like JSON and CSV for testing and development.

Prerequisites

• Python 3.8+
• bash shell
• Write access to ~/.generate/

Data Storage

Generated data history is stored in JSONL format at ~/.generate/data.jsonl. Each generation event is logged for reproducibility and batch export.

Commands

Run commands via: bash scripts/script.sh <command> [arguments...]

text

Generate random text strings: lorem ipsum, sentences, paragraphs, or custom patterns.

bash scripts/script.sh text --type lorem --words 50
bash scripts/script.sh text --type sentence --count 5
bash scripts/script.sh text --type paragraph --count 2

Arguments:

• --type — Text type: lorem, sentence, paragraph, word (optional, default: lorem)
• --words — Number of words for lorem (optional, default: 20)
• --count — Number of items to generate (optional, default: 1)

number

Generate random numbers with configurable range and format.

bash scripts/script.sh number --min 1 --max 100
bash scripts/script.sh number --min 0.0 --max 1.0 --decimal 4
bash scripts/script.sh number --count 10 --min 1 --max 1000

Arguments:

• --min — Minimum value (optional, default: 0)
• --max — Maximum value (optional, default: 100)
• --decimal — Decimal places for float (optional, generates int if omitted)
• --count — How many numbers (optional, default: 1)

uuid

Generate one or more UUIDs (v4).

bash scripts/script.sh uuid
bash scripts/script.sh uuid --count 5
bash scripts/script.sh uuid --format short

Arguments:

• --count — Number of UUIDs (optional, default: 1)
• --format — Format: full, short (8-char) (optional, default: full)

date

Generate random dates within a range.

bash scripts/script.sh date --start 2020-01-01 --end 2025-12-31
bash scripts/script.sh date --count 10 --format iso

Arguments:

• --start — Start date YYYY-MM-DD (optional, default: 2020-01-01)
• --end — End date YYYY-MM-DD (optional, default: 2025-12-31)
• --count — Number of dates (optional, default: 1)
• --format — Date format: iso, us, eu, unix (optional, default: iso)

name

Generate random person names.

bash scripts/script.sh name
bash scripts/script.sh name --count 10 --gender female
bash scripts/script.sh name --full

Arguments:

• --count — Number of names (optional, default: 1)
• --gender — Gender: male, female, any (optional, default: any)
• --full — Include last name (optional)

email

Generate random email addresses.

bash scripts/script.sh email
bash scripts/script.sh email --count 5 --domain example.com

Arguments:

• --count — Number of emails (optional, default: 1)
• --domain — Email domain (optional, default: random)

address

Generate random US-style addresses.

bash scripts/script.sh address
bash scripts/script.sh address --count 3

Arguments:

• --count — Number of addresses (optional, default: 1)

json

Generate random JSON objects with a specified schema.

bash scripts/script.sh json --schema '{"name":"name","age":"int:18-65","email":"email"}'
bash scripts/script.sh json --schema '{"id":"uuid","score":"float:0-100"}' --count 5

Arguments:

• --schema — JSON schema definition (required)
• --count — Number of objects (optional, default: 1)

csv

Generate random CSV data with headers.

bash scripts/script.sh csv --columns "name,email,age" --rows 20
bash scripts/script.sh csv --columns "id:uuid,name:name,score:float:0-100" --rows 50 --output data.csv

Arguments:

• --columns — Column definitions (required)
• --rows — Number of rows (optional, default: 10)
• --output — Output file (optional, default: stdout)

password

Generate random passwords with configurable complexity.

bash scripts/script.sh password
bash scripts/script.sh password --length 24 --count 5
bash scripts/script.sh password --no-special --length 16

Arguments:

• --length — Password length (optional, default: 16)
• --count — Number of passwords (optional, default: 1)
• --no-special — Exclude special characters (optional)

batch

Run multiple generation commands in batch from a config file.

bash scripts/script.sh batch --config batch.json

Arguments:

• --config — Batch configuration file (required)

help

Display help information and list all available commands.

bash scripts/script.sh help

version

Display the current tool version.

bash scripts/script.sh version

Examples

# Generate 100 user records as CSV
bash scripts/script.sh csv --columns "id:uuid,name:name,email:email,age:int:18-65" --rows 100 --output users.csv

# Create JSON test data
bash scripts/script.sh json --schema '{"user":"name","score":"float:0-100"}' --count 20

# Quick password generation
bash scripts/script.sh password --length 20 --count 10

Notes

• All generated data is logged in ~/.generate/data.jsonl for reproducibility
• Use --seed (where supported) for deterministic output
• Schema types for JSON/CSV: name, email, uuid, int:min-max, float:min-max, bool, date, string
• Batch mode accepts a JSON config with an array of generation commands

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