The proc directory

The /proc directory is one of the so-called virtual or pseudo filesystems since its contents are not written to disk, but loaded in memory. /proc includes information about:

• Running processes
• Kernel configuration
• System hardware

Here are some of the system's hardware information that can be gathered from /proc:

/proc/cpuinfo: It stores information about the system's CPU.

/proc/cmdline: It stores the strings passed to the kernel on boot.

proc/modules: It shows the list of modules loaded into the kernel.