What is the /proc directory in Linux, and what is it responsible for?

The /proc directory in Linux is a virtual filesystem that provides an interface to kernel data and real-time process information.

Main features and purpose of /proc:

• Contains files and directories representing processes by their PID (e.g., /proc/1234 for a process with PID 1234).
• Allows obtaining information about system status: CPU load, memory, devices, network connections, etc.
• Many files in /proc do not contain real data on disk but are generated dynamically upon reading.
• Used for monitoring and tuning kernel parameters (e.g., via /proc/sys).

Example: reading the /proc/cpuinfo file will show information about the processor, and /proc/meminfo about memory.

Thus, /proc is a powerful tool for interacting with the kernel and obtaining system information without the need for special utilities.