PostgreSQL Reference Manual - Volume 3 - Server Administration Guide by The PostgreSQL Global Development Group Paperback (6"x9"), 204 pages ISBN 0954612043 RRP £13.95 ($24.95) Sales of this book support the PostgreSQL project! Get a printed copy>>>

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3.1 The PostgreSQL User Account

As with any other server daemon that is accessible to the outside world, it is advisable to run PostgreSQL under a separate user account. This user account should only own the data that is managed by the server, and should not be shared with other daemons. (For example, using the user nobody is a bad idea.) It is not advisable to install executables owned by this user because compromised systems could then modify their own binaries.

To add a Unix user account to your system, look for a command useradd or adduser. The user name postgres is often used, and is assumed throughout this book, but you can use another name if you like.