What information does the NPC catalog in the Linux operating system contain?

In Linux, the /proc directory (possibly meant exactly this, not "NPC") is a virtual filesystem that contains information about the kernel state and running processes.

Specifically, in /proc, you can find:

• Subdirectories with process IDs (/proc/[pid]), which contain information about each process.
• Files with system information, such as /proc/cpuinfo (CPU info), /proc/meminfo (memory), /proc/uptime (system uptime).

These files do not contain real data on disk but are generated by the kernel when accessed, allowing real-time monitoring of system and process status.