How to check the number of CPU cores in Linux?

You can use the following command in a Linux system to check the number of CPU cores:

1. By using the command cat /proc/cpuinfo, you can view detailed information about each CPU core in the system, including the number of cores and threads. You can determine the number of CPU cores by checking the quantity listed under the processor field.
2. By using the command lscpu, you can view detailed information about the CPU, such as the number of cores and threads. To determine the number of CPU cores, check the CPU(s) field.
3. By running the command nproc, the number of CPU cores will be displayed directly.

After executing the above command, information about the CPU will be displayed, including the number of cores and threads. By checking the values of the relevant fields, the number of CPU cores can be determined.