The Linux proc file system, also known as procfs, is a virtual file system that provides information about the system, including its processes, hardware, and configuration parameters. It's located in the /proc directory and is created when the system boots and dissolved when it shuts down.  The proc file system contains a hierarchy of special files that represent the kernel's current state. This allows users and applications to see the kernel's view of the system. The system also provides a communication medium between kernel space and user space.  The proc file system contains detailed... Show more

The Linux proc file system, also known as procfs, is a virtual file system that provides information about the system, including its processes, hardware, and configuration parameters. It's located in the /proc directory and is created when the system boots and dissolved when it shuts down. 

The proc file system contains a hierarchy of special files that represent the kernel's current state. This allows users and applications to see the kernel's view of the system. The system also provides a communication medium between kernel space and user space. 
The proc file system contains detailed information about: Kernels, Processes, Configuration parameters, and System hardware. 
Some files in the proc file system can be examined by the shell user, but many require root privileges to access. You can examine some files in /proc directly from the adb shell, or manually examine the data using the find command to locate and list files. 
You can use the ls command with various options to list all the files and directories under the /proc directories. 
The proc file system is dynamically generated and exists only in memory. It allows processes to read and write information about themselves and other processes. 

Related Test: Linux Basics Practice Test: Linux Filesystem Hierarchy

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