Commandes pwgen1/3/2024 C'est la plus grande des sections de manuel et elle contient des pages allant de ls à gcc. Allbery, and then later extensively modified by Olaf Titz, Jim Lynch, and others.La première section rassemble toutes les pages de manuel dédiés aux utilisateurs. It is modelledĪfter a program originally written by Brandon S. This version of pwgen was written by Theodore Ts'o. y, -symbols Include at least one special character in the password. It provides less secure passwords to allow systemĪdministrators to not have to worry with random passwords accidentally contain offensive substrings. v, -no-vowels Generate random passwords that do not contain vowels or numbers that might be mistaken for vowels. Will simply write the password on a piece of paper taped to the monitor. These should only be used for machine passwords, since otherwise it's almost guaranteed that users s, -secure Generate completely random, hard-to-memorize passwords. That the name of the file may be easily available from the ~/.history or ~/.bash_history file. If you use this option, make sure the attacker can not obtain a copy of the file. WARNING: The passwords generated using this option are not very random. ie: pwgen -H ~/your_favorite.mp3# gives a list of possibles passwords for your pop3 account, and you can It will allow you to compute the same password later, if you remember theįile, seed, and pwgen's options used. H, -sha1= /path/to/file Will use the sha1's hash of given file and the optional seed to create password. This is the default if the standard output is a tty device. n, -numerals Include at least one number in the password. Here are some examples consult the man page for more options. This defaults to a screenful if passwords are printed by columns, and one password. N, -num-passwords= num Generate num passwords. C Print the generated passwords in columns. c, -capitalize Include at least one capital letter in the password. It may be useful for users who have bad vision, but in general use of this option is not Significantly, and as such reduces the quality of the passwords. This reduces the number of possible passwords B, -ambiguous Don't use characters that could be confused by the user when printed, such as 'l' and '1', or '0' or 'O'. a, -alt-phonics This option doesn't do anything special it is present only for backwards compatibility. A, -no-capitalize Don't bother to include any capital letters in the generated passwords. 1 Print the generated passwords one per line. Options -0, -no-numerals Don't include numbers in the generated passwords. The latter is not recommended for security reasons, since such passwords are far too easy to guess. The future, the behavior when stdout is a tty may change, so shell scripts using pwgen should explicitly specify the -nc or -0A options. This can be overriden using the -nc options. Generate less secure passwords, as if the -0A options had been passed to it on the command line. In addition, for backwards compatibility reasons, when stdout is not a tty and secure password generation mode has not been requested, pwgen will Order to be compatible with previous versions of this program. When standard output (stdout) is not a tty, pwgen will only generate one password, as this tends to be much more convenient for shell scripts, and in This prevents someone from being able to "shoulder surf" the user's chosen password. Used interactively, pwgen will display a screenful of passwords, allowing the user to pickĪ single password, and then quickly erase the screen. Standard output is a tty device or a pipe to another program. Hence, its default behavior differs depending on whether the The pwgen program is designed to be used both interactively, and in shell scripts. On the other hand, completely randomly generated passwords have a tendency to be written down, and are subject to being compromised in that fashion. Passwords generated by pwgen without the -s option should not be used in places where the password could be attacked via an off-line brute-forceĪttack. Human-memorable passwords are never going to be as secure as completely completely random passwords. Humans, while being as secure as possible. The pwgen program generates passwords which are designed to be easily memorized by
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