The at command allows users to specify a time and date when a command or script should be executed. The command to be executed can be provided directly on the command line or read from a file. The scheduled commands are stored in a spool directory, where at daemon (or atd ) periodically checks for pending jobs and executes them at the scheduled time.
Always log the User ID and Timestamp for every write command. In industrial settings, knowing who turned off a generator at 2:00 AM is critical. Summary Table: Common Write Commands Switching C_SC_NA_1 (45) Turning a light or motor on/off. Valve Control C_DC_NA_1 (46) Opening/Closing a water or gas valve. Setpoint C_SE_NC_1 (50) Setting a target temperature (float). Station — iec104-python 2.2 documentation write at command station v104
