mkpasswd - Overfeatured front end to crypt(3)

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 later.

Marco d'Itri                                       2019-12-30                                        MKPASSWD(1)

       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.

mkpasswd encrypts the given password with the crypt(3) libc function, using the given salt.

       MKPASSWD_OPTIONS
              A list of options which will be evaluated before the ones specified on the command line.

       mkpasswd - Overfeatured front end to crypt(3)

-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.

       -PNUM, --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.

passwd(1), passwd(5), crypt(3), crypt(5), crypt_gensalt(3), getpass(3).

mkpasswdPASSWORD [SALT]