2.1 KiB
passgen
Table of Contents
Introduction
passgen is a password generation tool that allows you to create secure and customizable passwords. It generates passwords based on user-specified criteria, including password length and character types (lowercase letters, uppercase letters, digits, and special characters). You can also use passgen without any options to generate a random password with default settings.
Building
This tool is provided as source code and can be built using make. By just
typing make in the terminal within the code's directory:
make
You should now have an executable named passgen. You can copy it to a location
in your PATH for easy access.
Usage
To use passgen, open your terminal and execute the program with the desired options.
passgen [OPTIONS]
Options
passgen provides the following command-line options:
-
-L,--length:- Specify the length of the generated password. Default is 24 characters.
- Valid range: 5 to 4096 characters.
-
-l,--lower-case:- Enable lowercase letters in the password.
-
-u,--upper-case:- Enable uppercase letters in the password.
-
-d,--digits:- Enable digits in the password.
-
-s,--special:- Enable special characters in the password.
-
-h,--help:- Display the help message and exit.
-
-v,--version:- Display the program version and exit.
Examples
- Generate a default password:
passgen
This will generate a 24-character password with a mix of lowercase letters, uppercase letters, digits, and special characters.
- Generate a password with specific options:
passgen -L 12 -lud
This will generate a 12-character password with only lowercase letters, uppercase letters, digits, and no special characters.
- Display help message:
passgen -h
This will display the usage and available options.
- Display version:
passgen -v
This will display the version of Passgen.