Linux File types detailed

? ? Everything in Linux is a file, but the files have to be typed. So how do you see what type of file it is? You can use the following commands in Linux

ls -l path

? ? The properties of the displayed file are usually displayed in the following form:

drwxr-xr-x

• 1th Letter: Representing the file type
• 2nd to 4th Letter: permissions on behalf of the user
• 5th to 7th letter: permissions on behalf of the user group
• 8th to 10th Letter: permissions on behalf of other users

? ? There are 7 types of files commonly found in Linux, as follows:

file Properties	File Type
-	Regular files, which are file
D	Catalog files
B	Block device files, such as hard disks, that allow random access in block units
C	Character device, which is a character unit file, such as keyboard support for linear access in character
L	Symbolic link is a symlink file, also known as a soft link file
P	Pipe is named piping file
S	Socket is a socket file that enables two processes to communicate

• Regular file

    对于常规文件而言，又可以分为二进制文件，xml文件，db文件等等，如果要查看一个常规文件的类型可以使用 file 命令

• Device class files

    通常情况下，在使用ls -l 后的第5列会显示当前文件的大小，但在设备类文件会有两个数字，以逗号间隔，这个并不表示是大小。  - 第一个数字：主设备号，用于区分设备类型，不同的设备主设备号不同，同一设备的设备号相同，用于确定加载设备的驱动程序  - 第二个数字：次设备号，用于区分同一种类型设备的不同设备，如硬盘1，硬盘2等

Examples are as follows:

Linux File types detailed