What is inside the Linux directory: /proc?

A virtual file system representing information about processes and the system in real-time. It contains pseudo-files and pseudo-directories that are not stored on disk. For example:

• /proc/<pid>: A directory with information about a specific process with the identifier <pid>.
• /proc/cpuinfo: Information about the central processing unit.
• /proc/meminfo: Information about the usage of RAM.
• /proc/mounts: A list of mounted file systems.
• /proc/sys: Kernel parameters that can be read and modified to configure system behavior.

# Example of reading CPU information
cat /proc/cpuinfo

# Example of reading memory information
cat /proc/meminfo