A Linux administrator is hardening a new server and needs to verify the user account configuration. According to standard Linux conventions and the default settings in /etc/login.defs on most modern distributions, which UID range is typically reserved for system accounts that run background services and daemons?
The correct answer identifies the standard UID range for system accounts. In Linux, UIDs are used to distinguish between different types of users. By convention, UIDs from 1 to 999 are reserved for system accounts, which are non-interactive accounts used by services and daemons. The root user is a special case and always has a UID of 0. Regular, interactive user accounts are typically assigned UIDs starting from 1000. This separation is configured through parameters like SYS_UID_MIN, SYS_UID_MAX, and UID_MIN in the /etc/login.defs file. Therefore, the range 1-999 is the standard for system accounts.
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