Linux differs from Windows in file structure, and Linux files and folders are organized into an inverted tree structure. and separated by/(slash). We can use the LL command or the LS command to view the Linux file structure under the root directory, as shown in the following example:
[Root@localhost/]# LL
Total Dosage 102
Dr-xr-xr-x. 2 root 4096 December 20:51 bin
Dr-xr-xr-x. 5 root http://www.aliyun.com/zixun/aggregation/12560.html ">1024 December 20:35 Boot
Drwxr-xr-x. 4 root 4096 December 13:20 data
Drwxr-xr-x. Root 3800 December 09:49 Dev
Drwxr-xr-x. 118 root root 12288 December 09:49 etc
Drwxr-xr-x. 5 root 4096 December 21:39 Home
Dr-xr-xr-x. Root 12288 December 20:51 Lib
DRWX------. 2 root 16384 June 8 2013 Lost+found
Drwxr-xr-x. 2 root root 4096 September media
Drwxr-xr-x. 2 Root 0 December 09:49 Misc
Drwxr-xr-x. 2 root 4096 September MNT
Drwxr-xr-x. 2 Root 0 December 09:49 net
Drwxr-xr-x. 3 root 4096 June 8 2013 opt
Dr-xr-xr-x. Root 0 December 09:48 proc
Dr-xr-x---. 5 root 4096 December 22:42 root
Dr-xr-xr-x. 2 root 12288 December 20:51 sbin
Drwxr-xr-x. 7 Root 0 December 09:48 SELinux
Drwxr-xr-x. 2 root root 4096 September SRV
Drwxr-xr-x. Root root 0 December 09:48 sys
Drwxrwxrwx. Root 4096 December 09:49 tmp
Drwxr-xr-x. Root 4096 December 21:08 usr
Drwxr-xr-x. Root 4096 December 21:21 var
Drwxr-xr-x. 4 root 4096 December 22:18 webserver
Important File Directory
User home directory:/root,/home/username
User executable directory: Bin,/usr/bin,/usr/local/bin
System executable Program:/sbin, Sbin,/usr/local/sbin
Mount point:/media, MNT
Common configuration file directory: etc
Temporary files directory:/tmp
Kernel and boot directory: Boot
Server directory: var
System Information Directory:/proc,/sys
Shared Library directory: Lib,/usr/lib,/usr/local/lib
User-Established directory/data,/webserver