Linux UID??

Posted on 2005-04-27
Last Modified: 2013-12-15
Why is it not recomended to have a user ID less than 500?
Question by:traderhank1
    LVL 9

    Expert Comment

    by:David Piniella
    because those UIDs are usually used by services/system accounts.

    Do a "more /etc/passwd" and you'll see the system users and note that most of their UIDs will be quite low.

    Author Comment

    there are no uids assigned for 400 - 499, is there a problem with using these?
    LVL 9

    Accepted Solution

    by convention, you shouldn't. in practice, it _probably_ won't break anything.

    If you don't have any servers on the system using IDs in that range, your system may try to create one and have a conflict, but I would think that'd be kind of unusual.

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