/proc Directory: Explained
Virtual filesystem that contains information about the system's processes, memory, and other hardware components
The /proc directory is a virtual filesystem that contains information about the system's processes, memory, and other hardware components.
It is dynamically generated by the kernel and does not exist as a traditional directory on disk.
Here is a list of important files and directories in the /proc directory and their meanings:
/proc/bus- Contains information about the system's buses, such as PCI and USB./proc/cmdline- Contains the command-line arguments that were passed to the kernel at boot time./proc/cpuinfo- Contains information about the processor, including the model, vendor, and features./proc/devices- Lists the device drivers that are currently loaded on the system./proc/diskstats- Contains statistics about the block devices on the system./proc/dma- Contains information about the Direct Memory Access channels on the system./proc/filesystems- Lists the filesystems supported by the kernel./proc/interrupts- Lists the interrupts that are currently in use on the system./proc/meminfo- Contains information about the system's memory usage and availability./proc/modules- Lists the kernel modules that are currently loaded on the system./proc/mounts- Lists the filesystems that are currently mounted on the system./proc/net- Contains information about the network interfaces and protocols on the system./proc/partitions- Lists the disk partitions on the system./proc/scsi- Contains information about the SCSI devices on the system./proc/stat- Contains various statistics about the system, including CPU usage and process counts./proc/swaps- Lists the swap spaces on the system./proc/sys- Contains various system parameters that can be configured through the sysctl command./proc/sysrq-trigger- Can be used to trigger a kernel panic by writing a character to this file./proc/uptime- Contains the uptime of the system, in seconds./proc/version- Contains the version of the Linux kernel and the compiler that was used to build it./proc/vmstat- Contains statistics about the virtual memory subsystem./proc/zoneinfo- Contains information about the system's memory zones./proc/[pid]- Each process on the system has a directory under/procwith the process ID as the name. These directories contain information about the corresponding process, such as its memory usage and status.