A daemon is a program with unique process that runs incessantly in the background. Daemon processes are neither owned by a user nor associated with a terminal, unlike regular processes. Instead, they are typically owned by the system or a privileged user. These processes are created as soon as the system boots and remain active until the system is halted or shut down.
For example: crond is a daemon program responsible for managing the crontab. It schedules and executes tasks at specified intervals. Another example is sshd, which manages SSH connections. This daemon allows users to log in remotely and execute commands securely.
