Linux Learning Note II: Linux file system

The major Linux versions follow the FHS (Filesystem Hierarchystandard) file system catalog standards and are a tree-structured organization file. The directories are briefly documented here.

All files under Linux are under/files.

Tree-shaped structure diagram:

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/boot: System startup related files main file 1, Vmliunx: Kernel 2, Initramfs: Disk image file 3, grub (bootloader)

/dev: Device files

Block device: Random access device.

Character Devices: Linear devices, sequential access. by character. Keyboard, mouse.

Device number: Main device number (major) and secondary device (minor)

/etc: Configuration file

/home: User House directory, per user default for/home/username,root users directly stored in/files.

/root: Admin Home Directory

/lib: library files, packaged with certain features, are called directly when developing a program.

/lib/modules: Kernel module files

Static library files:. A library files and executing programs are in one file and can be used directly when porting.

Dynamic Library file: dynamic-link library, under Windows. dll for. So (Shared object)

Shared object: The runtime loads into memory, and other programs use the data directly in memory without additional memory costs.

/lost+found: Files within each partition, the role of power outages or non-artificial downtime, the storage of unsaved files. Used to retrieve lost files.

/MNT: Mount directory. Used to mount additional temporary files.

/media: mount point directory. Used to mount mobile devices.

/OPT: Optional Directory

/proc: Pseudo file system. Modifying the file is equivalent to modifying the kernel. Only exists in memory and does not occupy external memory.

/proc/cpuinfo CPU Information

/proc/partitions system-recognized partition table

/proc/meminfo Memory Information

/proc/uptime System Uptime

/proc/devices devices that can be used

/proc/interrupts Interrupt Process

/proc/kmsg Kernel Information

/sys: Property mapping properties for file systems, which are related to hardware devices.

/tmp: Temporary files directory, files that are not accessed in the directory within January are deleted.

/var: a variable file.

/bin: Executable file, user command

/sbin: Executables, administration commands

/usr:shared,read-only: Share read-only files globally.

/usr/bin:

/usr/sbin:

/usr/lib:

/usr/local: Third-party software storage place.

/usr/local/bin:

/usr/local/sbin:

/usr/local/lib:

This article is from the "small rookie in the physical Layer" blog, please be sure to keep this source http://cdong.blog.51cto.com/1370468/1532840