====== Gruppen als Mitglieder von Gruppen ======

Debian/Ubuntu: 
  apt install --no-install-recommends sssd-tools libnss-sss libpam-sss


<file txt /etc/sssd/sssd.conf>
[sssd]
services = nss,pam
config_file_version = 2
domains = LOCAL

[domain/LOCAL]
id_provider = local
</file>

  chmod 600 /etc/sssd/sssd.conf

  sssctl config-check
  service sssd restart

  sss_useradd testuser1
  sss_useradd testuser2

  sss_groupadd testgroup1
  sss_groupadd testgroup2
  
  sss_usermod -a testgroup1 testuser1
  sss_usermod -a testgroup2 testuser2

  sss_groupshow testgroup1
  sss_groupshow testgroup2
  getent group testgroup1
  getent group testgroup2
  
  sss_groupmod -a testgroup2 testgroup1

  sss_groupshow testgroup1
  sss_groupshow testgroup2
  getent group testgroup1
  getent group testgroup2