UID, GID, and all that

[D. Hugh Redelmeier]

| From: Peter King <peter.king-H217xnMUJC0sA/PxXw9srA at public.gmane.org>

| Here's a question I should know the answer to but I'm too jet-lagged to think
| of it.

Don't sysadmin when jet-lagged.  Go for a walk in the fresh air and
sunshine.

| I'm rebuilding a system, and I've set up a new boot disk, which involved
| creating a new everyday user (call him "joe").

Always create user with the same UID and GID as they have on other
systems.  Your use case is a good motivating example.  So are backups
and NFS.

I've done that since 1982.  Got screwed by progress once: reserving
100 UIDs for the system was generous in 1982 so I started numbering at
101.  Fedora and Ubuntu have grabbed the first 500 or 1000 UIDs in
recent years.  So I have a discontinuity.
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