Linux basic commands

Cd:

CD dir: Switch the working directory to the directory represented by DIR

CD: Switch The working directory to the home directory of the logged-on user

CD-: Switch The working directory to the last working directory

CD ~: Switch working directory to home directory

CD ~username: Switch The working directory to the home directory of the specified user "USERNAME" only for use with the root user

Pwd:

PWD: Displays the name of the current working directory

LS: In the Linux file system, all with "." Files that start are hidden files

-A: Show all files including hidden files

-A: Displays except. and. All files outside of the file include hidden files

-D: Content that does not display the directory displays only the directory name of the directory

-L: Displays detailed properties of a file in a long format

-H: Easy to read file size format, usually using 1024 binary for unit conversion

-Z: Display the file's SELinux security context

mkdir: Creating a Directory

RmDir: Only empty directories can be deleted and files cannot be deleted

RM: Remove files or directories

-I: Interactive deletion with users

-F: Force delete without any hint

-r: Can delete contents of directory recursively

Touch: You can modify the timestamp of the directory, but try not to modify it for future time

Stat: View the status of a file

-C: Display specific properties of a file in a specific format

Nano

^: de-Char, which represents the CTRL key

Cat

-B: Line numbering for non-empty line content

-N: Number by row for all rows

-S: Merge multiple lines of blank behavior row

-E: Displays the line terminator at the end of each line in the document, expressed in $

Reverse output of Tac:cat

Head

-N: Displays the first n rows of the file, or it can be abbreviated-#

-C:[B|K|M|G] Displays the first # Characters of a file

b=512 bytes k=1024 bytes

Tail: Always monitor the changes at the end of the file using ^ exit

More, Less: pagination Displays the contents of a file

Hardware clock: hwclock, clock

-S: Set the system clock as a reference to the hardware clock

-W: Set the hardware clock as a reference to the system clock

--set: Set the hardware clock to the time indicated by

System clock: Date

Date-s "2017/10/10 10:10:10"

Date-s "2017-10-10 10:10:10"

Cal: Show Calendar

Shutdown:

Halt: Power off source is shutdown

Shutdown: Reminder shutdown

-H: Shutdown system

-R: Rebooting the System

-C: Cancel the shutdown job that is about to be performed at one time

Reboot: Re-boot

Log off, sign out

Exit: Exit the current shell

Logout

^+d

Cp:

CP [OPTION] ... SOURCE DEST (Single source replication)

CP [OPTION] ... SOURCE ... DIRECTORY (Multi-source replication)

Note: At least two parameters typically the last parameter is the target of this replication if the target of a cell copy can be a non-directory file but a multi-source replication must be a directory

-D: Copied source If it is a symbolic link file, the symbolic link file is copied directly to the target location, not the file it is linked to

-P: Ability to preserve file permissions when copying files, all and timestamps

-R: Ability to recursively replicate directories and files in a directory

-A: equivalent to the combination of the-DPR option

MV: Mobile

MV [OPTION] ... SOURCE DEST (Single source replication)

MV [OPTION] ... SOURCE ... DIRECTORY (Multi-source replication)

-F: Force overwriting of files with duplicate names in the target location

Linux basic commands