In the Linux world, everything is a file
1.linux directories and only a directory
2.linux contents of each directory store is planned, not misplacing files
3.linux manage our device as a file, so everything is a file
What 4.linux stored under each directory, we must have an understanding.
5. learning, your mind should have a linux directory tree
/ Root directory
/ Dev management device
/ Media external devices: u disk, etc.
/ Bin frequently used instructions
/ Bin / date setup time
/ Bin / cat browse files
/ Etc configuration files
/ Home user management
/ Mnt mount: temporary mount another file system
/ Root root user
/ Selinux Security Enhancement
/ Var log
/ Lib dynamic link library
/ Usr very important, user directory software
/proc
/srv
/ Opt local software installation package placed