Linux file Markers

When you use Ls-l, you can see

[[email protected]/]# ls-ltotal 28drwxr-xr-x 3 root root Sep 11:29 applrwxrwxrwx.   1 root root 7 Sep 16:25 bin--usr/bindr-xr-xr-x.  4 root root 4096 Sep 16:29 bootdrwxr-xr-x root root 3180 Sep 15:06 devdrwxr-xr-x.   Root root 8192 Sep 11:07 etcdrwxr-xr-x.   2 root root (SEP) 14:57 homelrwxrwxrwx.   1 root root 7 Sep 16:25 Lib, usr/liblrwxrwxrwx.   1 root root 9 Sep 16:25 lib64-usr/lib64drwxr-xr-x.   2 root root 6 June mediadrwxr-xr-x.   2 root root 6 June mntdrwxr-xr-x.   2 root root 6 June optdr-xr-xr-x 361 root root 0 Sep 11:07 procdr-xr-x---.   2 root root 4096 Sep 16:30 rootdrwxr-xr-x root root 660 Sep 15:06 runlrwxrwxrwx.   1 root root 8 Sep 16:25 sbin-usr/sbindrwxr-xr-x.   2 root root 6 June srvdr-xr-xr-x root root 0 Sep 11:07 sysdrwxrwxrwt.  7 root root (SEP) 18:55 tmpdrwxr-xr-x. Root root 4096 Sep 16:25 uSrdrwxr-xr-x. Root root 4096 Sep 11:07 var

Like these drwxr-xr-x

Where the first digit represents the document, followed by 3 of the 3 3 groups is represented by the file permissions

At present, I understand the document marked with BCD-LSP:

B-Block device C-character device D directory-normal L link s socket p pipe

The usual is D-

This is the end of this article, thank you ~

Linux file Markers