root@debian-test:~# getent group
root:x:0:
daemon:x:1:
bin:x:2:
[...]
systemd-journal:x:102:
systemd-timesync:x:103:
systemd-network:x:104:
systemd-resolve:x:105:
systemd-bus-proxy:x:106:
crontab:x:107:
netdev:x:108:sysadmin
messagebus:x:109:
ssh:x:110:
sysadmins:x:1001:admin1,admin2,admin3