Follow the old boy student movement-Basics-commands

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Follow the old boy student movement-Basics-commands

One, the order

1. mkdir (Make directory)

Description: Create a directory

Example: Mkdir/data

Parameter:-P

For example: Mkdir-p/data/a/* Create parent directory data and subdirectories a

2. CD (change directory)

Description: Change Directory

Example: cd/data/* Switch to/data directory

3. pwd

Description: View the current path

4. Touch

Description: Create a file

Example: Touch aaa.txt

Touch 123{a.  Z}/* Create file 123a, 123b 、...... 123z and 26 files

5, Vi

Description: Editor

I/* Enter edit mode

Press shift+: Enter command mode

w/* Write Save

Q/* exit

! /* Mandatory

6:vim

Description: Advanced Editor

7:cat

Description: view edit, append

Example: Cat aaa.txt \* View Aaa.txt

Cat >a.txt \* Edit A.txt

Cat >>/data/oldboy.txt <<eof I am as studying Linux EOF \*: Build oldboy.txt and append content from EOF to Oldboy.txt

8:echo

Description: Print

Example: Echo "I am studying Linux"

9:CP (copy)

Description: Copy

Parameters: R/* Copy directory, recursive

F/* Mandatory

d/* If the source file is a link file, copy the linked file zodiac rather than the file itself

I/* If the target file already exists, ask when overwriting

P/* Copy the past along with the properties of the document

A/* equivalent to PDR

U/* If the destination file exists, the destination file is copied older than the source file

10:mv

Description: Move

Example: mv/data/1.txt/data/abc/

11:ls (list)

Description: View List

Parameter:-L (Long) long format displays directory or file attributes

Parameter:-D display Directory

Parameters:-a show hidden files

Example: LS/ETC/* View directories and files under/etc

12:man

Description: Command Help

Example: Man command

Second, special symbols

1:> or 1>

Description: Redirect

Example: Echo "I am studying Linux" > Aa.txt

2: >> or 1>>

Description: Redirect and append content to the trailer

3:< or <0

Description: Redirect

4:<< or <<0

Description: Redirect and append content to the trailer

5:

Standard input (stdin) code: 0 Use < or << data flow from right to left

Normal output (STDOUT) code: 1 Use > or >> Data flow from left to right

Error output (stderr) code: 2 Use 2> or 2>>

Example: Ech 111 > Correct.txt 2> error.txt/* Outputs the correct output to the Correct.txt and outputs the error to Error.txt

For example: Echo oldboy >a.txt 2>&1/* Outputs both the correct output and the wrong output to the A.txt

Iii. Combination of commands

Four, shortcut keys

1. Tab

Description: Command Completion

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Follow the old boy student movement-Basics-commands