What is in the /proc folder?

The /proc folder in Linux operating systems is a virtual filesystem that provides an interface to the kernel's internal state and running processes.

It does not contain real files on disk; instead, its contents are generated dynamically upon access. In /proc, you can find:

• Information about processes: each process has a folder with its PID, containing data about its status, memory, open files, etc.
• System parameters and statistics: for example, /proc/cpuinfo — data about the processor, /proc/meminfo — memory information.
• Kernel and driver settings, which can be read and sometimes modified.

This is a powerful tool for monitoring and managing the system, widely used in system programming and administration.