Passgen — Secure Passwords from the Terminal

Passgen is a small Go CLI that generates strong random passwords from the terminal. By default it enables all character sets and uses crypto/rand for cryptographically secure randomness.

PassGen Demo

Quickstart

# basic (all character sets by default)
passgen -len 16 -count 3

# lower/upper/digits only
passgen -len 24 -count 5 -lower -upper -digits

# symbols only, excluding "@$"
passgen -len 20 -symbols -exclude "@$"

# exclude ambiguous characters (0 O 1 l I)
passgen -len 16 -no-ambiguous

# copy generated passwords to clipboard
passgen -len 20 -count 3 -copy

# render first password as QR code in terminal (requires -count 1)
passgen -len 20 -qr

Highlights

Flexible character sets: -lower, -upper, -digits, -symbols
Length and count control: -len, -count
Exclusions: -exclude, -no-ambiguous
Clipboard and QR output: -copy, -qr

Next Steps

Installation
Usage