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 program 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.