TestOut Linux Pro Practice Test 2025 - Free Linux Pro Practice Questions and Study Guide

The command to view CPU information in a Linux system is `cat /proc/cpuinfo`. This command accesses the `/proc/cpuinfo` file, which is a virtual file that contains detailed information about the CPU architecture, processor type, cores, cache size, and other processor-related information. By using `cat`, you can read and display the contents of this file directly in the terminal.

The structure of the `/proc` directory is designed to give users and applications access to kernel and process-related information, making it an essential source for system diagnostics and performance analysis. Therefore, running this command provides a comprehensive overview of the system's CPU properties, which can be vital for tasks like performance tuning or troubleshooting hardware issues.

The other choices do not exist or would not yield the desired information, as they either refer to nonexistent commands or files.