Generate passwords using Pwgen on Linux and macOS

August 22, 2016

Reading time ~1 minute

Intro

Pwgen is a password generator for creating easily memorable passwords. I stumbled across this tool and found it to be one of the best for Linux and macOS.

Installation

Arch Linux

$ pacman -S pwgen

Most Linux distributions should have a package management system with pwgen in their own repositories.

macOS

$ brew install pwgen

Pwgen is also available in MacPorts.

Usage

$ pwgen -h

Usage: pwgen [ OPTIONS ] [ pw_length ] [ num_pw ]

Options supported by pwgen:
  -c or --capitalize
        Include at least one capital letter in the password
  -A or --no-capitalize
        Don't include capital letters in the password
  -n or --numerals
        Include at least one number in the password
  -0 or --no-numerals
        Don't include numbers in the password
  -y or --symbols
        Include at least one special symbol in the password
  -s or --secure
        Generate completely random passwords
  -B or --ambiguous
        Don't include ambiguous characters in the password
  -h or --help
        Print a help message
  -H or --sha1=path/to/file[#seed]
        Use sha1 hash of given file as a (not so) random generator
  -C
        Print the generated passwords in columns
  -1
        Don't print the generated passwords in columns
  -v or --no-vowels
        Do not use any vowels so as to avoid accidental nasty words

Examples

Generate one single password.

$ pwgen -c -n -y 100 1
9S3UKhXUmoFMl7Nfm2E093EFTWVyX2d711AEKuOnCqWnkAQIJyPjgd3pgITmvove9wx0MbqLAnl8t8EsgMARigM5rSHFLDeopEuD

This password uses

  • at least 1 capital letter
  • at least 1 number
  • at least 1 symbol
  • 100 characters
  • 1 total password

Tell Pwgen to give 10 passwords.

$ pwgen -c -n -y -s 100 10
8Jjnm7RDTmMbMVs1gJotHo0esHR0GAJPaDErSjqyWZmdMJxh4xe5uiScHu4LfK8AbCj5lH5Iyu7P9Ia9nJyNZENJqmqruzQVIcO9
QatpFsxT7uHCWdEO5d0x7oKX1SKzv9w1gJkrYd8lXcaJyoZr1BCMe2xuaWbyy7Zidf9ueCZOv3oAFO0aWhTRT0T44o9OLdtPOWR3
9Zm70DICfcvfHPTsyz83VuLJ1MyUSHJE9kkuXDltGorouwaXsHuRfdvJDXg40XmPSOTC6K4omfinqGefU6oQ7pj4sOCnplhiMxAD
bi8DOCfMmDmTQ3EL8RXDgInEUqV0mTk0ZeUXDstiEm2pj3PQ6kjSRcVawQw0jIuuaq4ZQGsyNzIBnNJJVkT42hgPLtJD9WaxIICE
DfdQiPEwPytSHBD5vDqgqxxbBuqlNFbADRvljtfTUAf2eCheuGLsLBUJGvs4YZ3MUglrY3ebKLQBQ20aEJu0RAeC0M1mjdNNJp3z
ZnL0oJSh45a2yAVvaS4HM2GTuUWgitX5pGRjF2LjXnmsp2kRvQYrxkQxo2yqWmJ6Lqh6uaDmckQhlcujoJvZgRruSbUZxZniLjNi
UaeFRz4rcMfVtarft7J5Lspu2tamL9i9fu9J394exCfRDj2k6UN5HsCi7shWy8bD2IB1ISAGyIb8qIpXvygQuzQJaZ9V5dYaCRaj
NLRZSsmtDCA2sVtjIse8brhMM0GWskJffOvarAYBZEagz179AdwtgnmpaRz2sZo3Yw36RO15Nls9QbJrvWQbKek0ULq4dNMaNK1N
1TOvS5zuKB1LC9PaewvOO8jEn8lij1KYJyvvfLIgbLP8zlo4vzf2uOcJmkXa9ukpXxxcTuoYRNpscwbfx8HiSDWLJQ4jNjxUICz6
AwmHShhV8WQGjvOwyM8mTIjex6APatAVEGHcACCji53ClfnPKsiO7cacdQK5zTSxdLIqe4bwqWImlQJYMY0P4Uj6PckdfMWRptWX

I think anyone should get the idea right away. In short, you can easily fine tune Pwgen to give as complex of passwords as needed.

comments powered by Disqus

Setup Dovecot with LDAP

Intro The Dovecot wiki does a really good job at explaining how to have Dovecot and OpenLDAP work together, but in this post I will describe…… Continue reading

Using LDAP authentication with OpenVPN

Published on August 02, 2017

LDAP Mail Distribution Groups with Postfix

Published on May 01, 2018