On a FreeBSD system, you can use the sysctl command to view the temperature of the CPU (processor). The sysctl command allows you to view and modify various system parameters, including information about the system's hardware.
To view the temperature of the CPU on a FreeBSD system, you can use the following sysctl command:
sysctl dev.cpu.0.temperature
This will display the temperature of the first CPU in degrees Celsius. If your system has multiple CPUs, you can use the dev.cpu.X.temperature parameter, where X is the index of the CPU, to view the temperature of each CPU.
For example, to view the temperature of the second CPU, you can use the following command:
sysctl dev.cpu.1.temperature
If your system does not have a temperature sensor, or if the temperature sensor is not working properly, the sysctl command may not return a temperature. In this case, you may need to use a different tool or method to measure the temperature of the CPU.
For more information about using sysctl to view system information, you can refer to the sysctl man page by running man sysctl on the command line.