Categories: Ports
Several ports of system services includes a pre- or post-install script to add users and/or groups with a explicit numeric group/user ID and don't use the --system option of groupadd and useradd. See the table below to avoid name clashes if you create new system users or groups.
| UID | UNAME | GID | GNAME | Port |
| 26 | dovecot | 26 | dovecot | opt/dovecot |
| 27 | dovenull | 26 | dovecot | opt/dovecot |
| 40 | squid | 40 | squid | opt/squid |
| 41 | unbound | 41 | unbound | opt/unbound |
| 45 | fcron | 45 | fcron | opt/fcron |
| 46 | mysql | 46 | mysql | opt /mysql |
| 47 | nsd | 47 | nsd | opt/nsd |
| 48 | stunnel | 48 | stunnel | opt/stunnel |
| 55 | chrony | 55 | chrony | opt/chrony |
| 83 | polkitd | 83 | polkitd | opt/polkit |
| 93 | flatpak | 93 | flatpak | contrib/flatpak |