Datelistinator 🗓️

Datelistinator is a simple and flexible CLI tool written in Python that generates a list of dates between two given dates in a user-defined format.

It is designed as a helper tool for authorized security testing, such as creating date-based wordlists commonly used in password audits and labs.

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Features

• Accepts date input in DD-MM-YYYY format
• Generates dates between a given range (inclusive)
• Supports custom output formats using strftime
• Clean command-line interface using argparse
• Input validation with meaningful error messages

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Requirements

• Python 3.x
  (No external libraries required)

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Installation

Clone the repository:

git clone https://github.com/RohanTheProgrammer/datelistinator.git
cd datelistinator

Make the script executable (optional):

chmod +x datelistinator.py

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Usage

Basic usage

python3 datelistinator.py -i 01-01-2000 -l 05-01-2000

This generates a file named datelist.txt with dates in the default format (DDMMYY).

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Custom output format

Use the -f flag to specify any valid strftime format:

python3 datelistinator.py -i 01-01-2000 -l 05-01-2000 -f "%Y%m%d"

Output:

20000101
20000102
20000103
20000104
20000105

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Specify output file

python3 datelistinator.py -i 01-01-2000 -l 31-12-2000 -o dates.txt

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Supported Input Format

• Input dates: DD-MM-YYYY Example: 01-01-2001

• Output format: Any valid Python strftime format Examples:

  • %d%m%y → 010101
  • %d%m%Y → 01012001
  • %Y%m%d → 20010101

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Help

Use the help flag to see all options:

python3 datelistinator.py --help

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Use Case

This tool is intended for:

• Generating date-based wordlists
• Password auditing (authorized only)
• Cybersecurity labs and CTFs
• Learning and practicing Python CLI development

⚠️ Use responsibly and only on systems you own or have explicit permission to test.

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Author

Rohan
Self-taught cybersecurity student
GitHub: RohanTheProgrammer