server-scripts/scripts/usr/local/bin/script-user-reset-password

#!/usr/bin/env bash
# Reset a user password on the server
# Copyright 2021-2025 Bryan C. Roessler
# Licensed under the Apache License, Version 2.0
p="${BASH_SOURCE[0]%/*}"; [[ -r $p/script-functions ]] && . "$p"/script-functions || exit 1

is_root

echo "Usage: $0 [username] [password]"

case $# in
  0)
    prompt user
    prompt password
    ;;
  1)
    user="$1"
    prompt password
    ;;
  2)
    user="$1"
    password="$2"
    ;;
  *)
    echo "Too many arguments provided"
    exit 1
    ;;
esac

if ! id -u "$user" &>/dev/null; then
  echo "User $user does not exist"
  exit 1
fi

if ask_ok "Change user $user's password to $password?"; then
  echo "$user:$password" | chpasswd
  (echo "$password"; echo "$password") | smbpasswd -a -s "$user"
fi

ask_ok "Prompt user to reset password on next login?" &&
  passwd --expire "$user" &&
  echo "NOTE: The file sharing (smbpasswd) will not be changed"

exit 0