Introduction to the Linux root directory folder

/bin	bin is the abbreviation for binary. This directory inherits the structure of the UNIX system and stores the commands most often used by the user. such as CP, LS, cat, and so on.
here is a boot linux some of the core files used, such as kernel initrd,grub.
/dev	dev linux devices and files are accessed in the same way. For example:/dev/hda represents the first physical IDE hard disk.
/etc	etcetera abbreviation. System and application of the configuration files, text format storage.
/etc/gateways	Set up a router
/etc/sysconfig/ Network-scripts /ifcfg-eth0	Set IP
/etc/resolv.conf	Set up DNS
/etc/fstab	Record the file system to mount on boot (use this file for disk quotas)
/etc/inittab	Set what runlevel the INIT process sets the system to when the system starts (sixth chapter has been useful)
/etc/group	Set the user's group name and related information
/etc/passwd	Account information
/etc/shadow	Password information
/etc/exports	Set up for NFS systems
/home	The user's home directory, such as a user named Zhong, his home directory is/home/zhong can also be used to express ~zhong.
/lib	library abbreviation library file, (Static library, dynamic library) This directory contains the system's most basic dynamic link sharing library, which acts like a. dll file in Windows. These shared libraries are required for almost all applications. Note: The library file cannot be run directly and can only be called by the program's Access \ Execute interface.
/lost+found	This directory is usually empty, and when the system shuts down, it becomes a refuge for homeless files. Yes, a bit like the. chk file under DOS.
/meida	mount point Directory--Mobile device
mount abbreviation. This directory is to allow users to temporarily mount other file systems.
/proc	This directory is a virtual directory, it is a mapping of system memory, we can access this directory directly to obtain system information. In other words, the contents of this directory are not on the hard disk but in memory.   (can see kernel working properties)
/root	The home directory of the system administrator root.
/sbin	s That's what Super user means, which means that the admin program used by the system administrator is stored here.
/sys	A pseudo file system, a property mapping file associated with a hardware device.
/tmp	This directory, needless to say, must be the place to store some temporary files.
/usr	This is the largest directory, and almost all of the applications and files we use are stored in this directory. The following subdirectories are included;
/usr/x11r6	A directory for storing X-window;
/usr/bin	Store many applications;
/usr/sbin	Some management programs for super users are put here;
/usr/doc	This is the base of the Linux documentation;
/usr/include	Linux
/usr/lib	Store some common dynamic link shared libraries and static archives;
/usr/local	This is provided to the general user of the/usr directory, where the installation of software is most suitable;
in Linux is a synonym for help, here is the directory where the help document is stored;
/usr/src	Linux Open source code exists in this directory
There are a variety of files stored, in order to maintain the relative stability of/usr, those directories that are often modified can be placed in this directory, in fact, many system administrators do this. Incidentally, the system's log files are in the/var/log directory.

/srv	server
miscellaneous devices (Misc device) Miscellaneous devices are also a device driver that is used more in embedded systems.
/cgroup	Cgroup is the controller group. is a mechanism provided by the Linux kernel that restricts, records, and isolates the physical resources (such as cpu,memory,io, etc.) used by the process group (groups). Cgroups is also the resource management tool that LXC uses to implement virtualization.

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Introduction to the Linux root directory folder