Pwgen

Aus FAQ-vServer

PWGenerator ist ein kleines Tool, welches Zeichenketten herstellt, die für Passwörter verwendet werden können.

Der Vorteil dieses Programms ist es, grundsätzlich Passwörter zu generieren, die nicht in regulären Wärterbüchern vorkommen, dennoch aber durch Wortsilben eine gewisse Melodie erzeugen lassen.

Je nach Anforderung können aber auch reine Zeichenfolgen ohne jeden erkennbaren Zusammenhang erzeugt werden.

Sehr brauchbar ist dieses Komando:

pwgen -1 10

Es erzeugt ein 10-Zeichen langes Passwort, welches aus Ziffern sowie großen und kleinen Buchstaben besteht.

Kurzhilfe

vps:~# pwgen --help
Usage: pwgen [ OPTIONS ] [ pw_length ] [ num_pw ]

Options supported by pwgen:
  -c or -capitalize
        Include at least one capital letter in the password
  -n or --numerals
        Include at least one number in the password
  -s or --secure
        Generate completely random passwords
  -h or --help
        Print a help message
  --no-numerals, --no-capitalize
        Don't include a number or capital letter in the password
  -C
        Print the generated passwords in columns
  -1
        Don't print the generated passwords in columns

Manpage

Manualpage PWGEN(1)
NAME
     pwgen - generate pronounceable passwords

SYNOPSIS
     pwgen [ OPTION ] [ pw_length ] [ num_pw ]

DESCRIPTION
     pwgen generates passwords which are designed to be easily memorized by
     humans, while being as secure as possible.

     The pwgen program is designed to be used both interactively, and in
     shell scripts.
     Hence, its default behaviour is differs depending on whether the standard
     output is a tty device or a pipe to another program. Used interactively,
     pwgen will display a screenful of passwords, allowing the user to pick a
     single password, and then quickly erase the screen. This prevents someone
     from being able to "shoulder-surf" the user's chosen password.

     When standard output is not a tty, pwgen will only generate one password,
     as this tends to be much more convenient for shell scripts. This also
     assures that pwgen is compatible with a previous version of this program.

OPTIONS
     -a, --alt-phonics
       This option doesn't do anything special; it is present only for backwards
       compatibility.

     -c, --capitalize
       Include at least one capital letter in the password. This is the
       default if the standard output is a tty device.

     -C
       Print the generated passwords in columns. This is the default if the
       standard output is a tty device.

     -n, --numerals
       Include at least one number in the password. This is the default if the
       standard output is a tty device.

     --no-numerals
       Don't include a number in the generated passwords.

     --no-capitalize
       Don't bother to include any capital letters in the generated passwords.

     -N, --num-passwords=num
       Generate num passwords. This defaults to a screenful if passwords are
       printed by columns, and one password.

     -s, --secure
       Generate completely random, hard-to-memorize paswords. These should
       only be used for machine passwords, since otherwise it's almost
       guaranteed that users will simply write the password on a piece of
       paper taped to the monitor...

     -h, --help
       Print a help message.

     -1
       Print the generated passwords one per line.

AUTHOR
     This version of pwgen was written by Theodore Ts'o <tytso@alum.mit.edu>.
     It is modelled after a program originally written by Brandon S. Allbery,
     and then later extensively modified by Olaf Titz,  Jim Lynch, and others.
     It was rewritten from scratch by Theodore Ts'o because the original
     program was somewhat of a hack, and thus hard to maintain, and because the
     licensing status of the program was unclear.

SEE ALSO
     passwd(1)

pwgen version 2.02       July 2002                    PWGEN(1)