daemon

Definition

A background process that runs continuously on Unix-like systems, handling tasks without any user interaction—like a helpful ghost in your machine. Despite the demonic name, it's usually benign, managing things like printing, networking, or scheduled tasks while you're blissfully unaware. When something goes wrong with a daemon, you'll spend hours hunting through log files to exorcise it.

Example Usage

The printer daemon crashed again, which explains why nothing has printed in three days despite everyone clicking 'print' furiously.

Source: Unix/Linux systems terminology

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