create_user.sh

#! /usr/bin/env bash

# normally first char of prename + surname
users="${@:-nwagner}"

# normally users
group="users"

# normally adm and/or sudo
groups="adm,sudo"

for user in ${users}; do
  auth_keys_file=/home/${user}/.ssh/authorized_keys
  echo "Creating access for user: ${user}"
  useradd -s /bin/bash -m ${user} -g ${group} -G ${groups} -c "manually created on $(date +%Y%m%d-%H%M%S)"
  mkdir -m 0700 /home/${user}/.ssh
  [ -f "${auth_keys_file}" ] || install -b -m 0600 /dev/null ${auth_keys_file}
  echo "Paste user's SSH pub key here, make sure to end with new line and press CTRL+D to exit"
  echo ${auth_keys_file}
  cat >>${auth_keys_file}
  echo "SSH pub key stored in ${auth_keys_file}"
  chown -R ${user}:${group} $(dirname ${auth_keys_file})
  echo -e "... User '${user}' done\n"
done

Alessandro
ssh-rsa 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 [email protected]