Introduction to FHS File system usage in Linux

FHS File System

/bin: Executable program storage, binary files
/sbin: Commands that only administrators can execute
The program the operating system needs to run itself when it starts/sbin,/bin
Other Locations:
/usr/bin
/usr/sbin
/usr/local/bin
/usr/local/sbin
Other functions outside the OS itself some service execution procedures, in/usr/bin and/usr/sbin
Third-party programs,/usr/local/bin and/sbin

/boot: Storing system boot files, kernels, Ramfs files, Bootloader,grup, etc.
/dev: Device file storage directory
/etc: Configuration file storage directory
/etc/sysconfig: System Application Profile
/ETC/INIT.D: System service script, changed on CENTOS7
/home: Normal User default home directory, and directory with the same name as user name
/root: Administrator home directory (Administrator on Unix has no home directory and no login allowed)
/ Lib64,/lib:lib is a 32-bit system library file location, lib64 is the lib64 library file location, and if it is a 32-bit system there is no lib64 directory
Application Library:
If the application is installed in/usr/local/the library file will be in the/usr/ Local creates a Lib, but the system does not come here to find the library file
If the application is installed under/usr/bin,/bin,/sbin, it is placed under/lib
/lost+found: The newly formatted partition will produce a
/ Media: Medium, dedicated mount location, usually used to hang on portable devices, if disc, USB
/mnt: Private hanging in position, usually used to mount additional storage devices such as hard disk
/mics: Alternate directory
/net: Not standard directory
/OPT: Alternative directories, usually used to install Third-party software, are installed under/OPT in the early days when there is no/usr/local
/proc: Pseudo file systems, mapping of kernel parameters that will not be mapped until they are started! The file shown in proc is not actually a file. (Kernel parameters and kernel state parameters, the kernel maps parameters to a file, and the value of the file is the value that the parameter can assign.
/sys: Pseudo file system, system-level peripheral Hardware Device attribute-related parameters, also shown as file
/srv: Provide data storage location for services
/tmp: Temporary file system, default file for a certain time, more than delete
/usr:shared shared, ReadOnly read-only,
/usr/include: Header file, contains other and development related
/var: frequently changing files
/var /log
/var/lock
/var/run
/var/cache