python3 -c "import crypt;print(crypt.crypt(input('clear-text pw: '), crypt.mksalt(crypt.METHOD_SHA512)))"

python -c 'import crypt; print crypt.crypt("test", "$6$random_salt")'

python3 -c 'import crypt; print(crypt.crypt("test", crypt.mksalt(crypt.METHOD_SHA512)))'

mkpasswd -m sha-512
mkpasswd -m md5

mkpasswd -m help

Usage: grub-crypt [OPTION]...
Encrypt a password.

-h, --helpPrint this message and exit
-v, --version           Print the version information and exit
--md5                   Use MD5 to encrypt the password
--sha-256               Use SHA-256 to encrypt the password
**--sha-512             Use SHA-512 to encrypt the password (default)**

#define _XOPEN_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

int main(int argc, char *argv[]) {
  if ( argc < 3 || (int) strlen(argv[2]) > 16 ) {
    printf("usage: %s password saltn", argv[0]);
    printf("--salt must not larger than 16 charactersn");
    return;
  }

  char salt[21];
  sprintf(salt, "$6$%s$", argv[2]);

  printf("%sn", crypt((char*) argv[1], (char*) salt));
  return;
}

/usr/bin/gcc -lcrypt -o passwd-sha512 passwd-sha512.c

passwd-sha512 <password> <salt (16 chars max)>

#Set stronger password hasing
/usr/sbin/authconfig --test | grep sha512 > /dev/null
if [ $? -ne 0 ]; then
echo "Configuring sha512 password hashing"
sudo /usr/sbin/authconfig --enableshadow --passalgo=sha512 --updateall
fi

'password'.crypt('$6$' + rand(36 ** 8).to_s(36))

#!/usr/bin/env python

import getpass

from passlib.hash import sha512_crypt

if __name__ == "__main__":
    passwd = getpass.getpass('Password to hash: ')
    hash = sha512_crypt.encrypt(passwd)

    print hash

import crypt, getpass, pwd, string, sys, random
randomsalt = ""
password = getpass.getpass()
choices = string.ascii_uppercase + string.digits + string.ascii_lowercase
for _ in range(0,8):
    randomsalt += random.choice(choices)
print crypt.crypt(password, '$6$%s$' % randomsalt)

$ htpasswd -c /tmp/my_hash user1
New password:
Re-type new password:
Adding password for user user1
$ cat /tmp/my_hash
user1:$apr1$oj1ypcQz$4.6lFVtKz2nr8acsQ8hD30

#!/bin/bash
read -p "Enter username: " username
read -s -p "Enter password: " mypassword
echo
echo -n $username:$mypassword | chpasswd -S -c SHA512

If salt is a  character  string  starting  with  the  characters
   "$id$" followed by a string terminated by "$":

          $id$salt$encrypted

   then instead of using the DES machine, id identifies the encryp‐
   tion method used and this then determines how the  rest  of  the
   password  string is interpreted.  The following values of id are
   supported:

          ID  | Method
          ─────────────────────────────────────────────────────────
          1   | MD5
          2a  | Blowfish (not in mainline glibc; added in some
              | Linux distributions)
          5   | SHA-256 (since glibc 2.7)
          6   | SHA-512 (since glibc 2.7)

   So  $5$salt$encrypted  is  an  SHA-256  encoded   password   and
   $6$salt$encrypted is an SHA-512 encoded one.