idunix
Which account or group is assigned a given user or group ID, per distribution.
What this is
idunix indexes the user and group IDs assigned in Linux distribution base packages, so a number can be looked up instead of guessed. Every row records the package, the version and the commit it was read from.
Where two source packages assign the same number to different names, the disagreement is shown rather than resolved. Where a source says nothing, that is recorded as nothing found.
24
assigned UIDs
52
assigned GIDs
17
system accounts
2
source packages
Reference
Tools and data
Sources
| Distribution | Source package | Package version | Commit | Read from source |
|---|---|---|---|---|
| Debian | base-passwd | 3.6.8 | a080557e1d59 | 2026-08-07 |
| Alpine Linux | alpine-baselayout | 3.7.2 | a9c597c5cee0 | 2026-08-07 |