rtcwake

rtcwake is a command-line tool available in Linux-based systems that provides a convenient way to schedule wake-up events and suspend or hibernate the system accordingly. The tool is used to schedule system wake-ups, helping users save power consumption and automate tasks. It stands for "RTC (Real-Time Clock) Wake," as it utilizes the real-time clock to trigger wake-up events. rtcwake allows you to specify a specific time or a relative duration for the system to wake up. It supports various power states like standby, mem (suspend to RAM), disk (suspend to disk), and off (power off). rtcwake can be used for tasks such as automatically booting up a system at a specific time, initiating system backup and maintenance tasks, and triggering scheduled events. It provides a flexible and efficient way to manage power and automate processes on Linux systems.