Common functions of Redhat,centos Linux Common command ls

①ls default display of files in the current directory

Displays the current directory in which to use the command PWD (printing working directory)

So LS and ls/root show the same effect.

②ls–l displaying full information about a file

File type of Linux: Introduction

-: Normal file

D: Catalog file

B: Block device files (blocks)

C: Character device file (character)

L: Symbolic Connection files (symbolic link file)

P: Command pipe file (pipe)

S: Socket file (socket)

File permissions: A total of 9 bits per 3 bits a group of rwx (read, Write, execute,-indicates no one of the three permissions)

-H Unit conversion (convert the size of the file to a unit that is easy for adults to intuitively understand)

Timestamp time stamp

Access: time when the file was last accessed

Modify: The time the file was recently taken from the edge

Change: The time that the file attribute was changed is the time the metadata was modified metadata

③–a Show hidden files that begin with.

. Represents the current directory

.. Represents the parent directory of the current directory

-A shows hidden files that start with. But not included. And..

-D Displays the directory's own properties Ls–l–d/root

-I display the index node number (number) of the file the computer is easily recognizable

-r: Displaying files in reverse alphabetical order of file names

-R: Recursive display of files

Common functions of Redhat,centos Linux Common command ls