MKPASSWD
Section: Debian GNU/Linux (1)
Updated: 2019-12-30
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NAME
mkpasswd - Overfeatured front end to
crypt(3)
SYNOPSIS
mkpasswd
PASSWORD
[
SALT]
DESCRIPTION
mkpasswd
encrypts the given password with the
crypt(3)
libc function, using the given salt.
OPTIONS
- -S,
-
--salt=STRING
Use the
STRING
as salt. If it begins with
$
then it will be passed straight to
crypt(3)
without any checks.
- -R,
-
--rounds=NUMBER
Use
NUMBER
rounds. This argument is ignored if the method chosen
does not support variable rounds. For the OpenBSD Blowfish method this is
the logarithm of the number of rounds.
The behavior is undefined if this option is used without
--method.
- -m,
-
--method=TYPE
Compute the password using the
TYPE
method.
If
TYPE
is
help
then the list of available methods is printed.
If
TYPE
begins and end with
$
characters then the string is passed to
crypt_gensalt(3)
as-is.
- -5
-
Like
--method=md5crypt.
- -P
-
NUM, --password-fd=NUM
Read the password from file descriptor
NUM
instead of using
getpass(3).
If the file descriptor is not connected to a tty then no other text
than the hashed password is printed on stdout.
- -s, --stdin
-
Like
--password-fd=0.
ENVIRONMENT
- MKPASSWD_OPTIONS
-
A list of options which will be evaluated before the ones specified on the
command line.
BUGS
If the
--stdin
option is used then passwords containing some control
characters may not be read correctly.
This programs suffers of a bad case of featuritis.
SEE ALSO
passwd(1),
passwd(5),
crypt(3),
crypt(5),
crypt_gensalt(3),
getpass(3).
AUTHOR
mkpasswd
and this man page were written by Marco d'Itri
<
md@linux.it>
and are licensed under the terms of the GNU General Public License,
version 2 or higher.