useradd-batch

#!/bin/bash

PREFIX=user

for NUMBER in {00..09}
do
  NAME="${PREFIX}${NUMBER}"
  # Genera la sal aleatoriamente desde /dev/urandom
  SALT=$(dd if=/dev/urandom bs=1 count=6 2>/dev/null | base64)
  PW="`mkpasswd -m sha-256 'password'${NUMBER} ${SALT}`"

  useradd \
    --password "${PW}" \
    --create-home \
    --home-dir=/home/$NAME \
    --shell=/bin/bash \
    --gid users \
    $NAME
done