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This article mainly explains "the common file operation commands of Linux". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Now let the editor to take you to learn the "Linux common file operation commands" it!

1, user handoff

Su (switch user)

2, display the list of files in the current directory

Ls (list)

Ls-l

Ls-a (all)

Ll

Ll-a

In Linux, hide the file to "." The beginning

3. Various operations of the directory

Switch directories: cd (change directory)

Show current directory: pwd (print working directory)

Create a directory: mkdir (make directoriy)

-p if the parent directory does not exist, the parent directory (parents)

Cp copies a file or directory (copy)

-r Recursive processing to copy files in the specified directory with subdirectories (recursive)

Mv move file or directory, file or directory rename (move)

Rmdir deletes an empty directory (remove directoriy)

Rm Delete Files (remove)

-r delete all files in this directory at the same time (recursive)

-f Force deletion of a file or directory (force)

When the average user deletes, there is no prompt

But when the Super Admin deletes, it will prompt

Supplementary points: cd ~ can quickly get to the home directory

4. Edit the contents of the file-VI,VIM (key)

Workflow flow chart:

Insert command resolution:

A: add text after the current character

A: add text at the end of the line

I: insert text before the current character

I: insert text at the beginning of the line

O: insert a blank line after the current line

O: insert a blank line before the current line

Shortcut commands:

Positioning command

: set number displays the line number

: set nonumber cancels line number

N to the nth line of the text

Gg to the first line of the text

G to the last line of the text

Delete command

X: delete the single character where the cursor is located

Dd: delete the line

Revoke an order

U undo, cancel the previous operation

Ctrl+r redo, before returning to undo

Copy command

Yy+p

5. Review and statistics of the contents of the documents

Touch creates an empty file

Display the contents of the file:

Cat displays the contents of the text file

More pagination displays the contents of the text file

Less

Head and tail view the beginning or end of the text

Head-n 3 java.txt view the first three lines of the java.txt file

Wc counts the number of lines, words, and characters of text (word count)

-m statistics of text characters and numbers

-w count the number of words in the text

-l count the number of lines of text

6, file merging and redirection

Output the contents of the merged file together, cat 1.txt 2.txt

Merge files: cat 1.txt 2.txt > 3.txt

As a standard input

Cat > 1.txt

Cat > > 1.txt

This is a symbol that redirects the output

Case: quickly empty the contents of a file

Use redirect method

> 1.txt

7, file search

Find looks for the specified file in the file system

Find / usr/local/-name word.txt

8, compression, decompression and packaging of files

Command overview

Gzip: compressed (unzipped) files with the suffix gz

Bzip2: compressed (unzipped) files with the suffix bz2

Tar: package a file or directory

Detailed explanation of command

Gzip command details: gzip [option] the file name to be compressed (unzipped)

-d unzip the compressed file (decompress)

-l for compressed files, display the size of compressed files, file size before compression, compression ratio, etc.

-num adjusts the compression speed with the specified number num, and-1 or-- fast indicates the fastest compression method (but the compression ratio is low)

-9 or-- best represents the slowest compression method (high compression ratio). The system default is 6

Bzip2 command details: bzip2 [options] file name

-d decompression

-z compression

-num ditto

Tar command details: tar [options] Packaging File name to be packaged File 1 to be packaged File 2

-c create a packaged file create

-x unlock a packaged file extract

-z compress files with gzip

-j compress files with bzip2

-v the process of compression displays the file

-f use the document name, and receive the document name immediately after f

Case study:

Realize the packaging and unpacking of files

Realize the compression and decompression of files

Gzip 1.txt compressed file

Gzip-d 1.txt.zip extract the file

Tar-cf 33.tar 1.txt 2.txt / / package file

Tar-xf 33.tar / / unpack the file

Gzip 33.tar / / compress the package file tar.gz

Tar-zcf 33.tar.gz 1.txt 2.txt / / package and compress 1.txt and 2.txt into 33.tar.gz

Tar-zxf 33.tar.gz / / decompress 33.tar.gz

9, pipe command

Command format:

Command1 | command2

For example:

Ls-l / usr/bin | less

Ls-l / usr/bin | grep less

The standard output of one command can be piped to the standard input of another command:

Grep is a powerful program for finding matching text in files.

At this point, I believe that everyone on the "Linux commonly used file operation commands" have a deeper understanding, might as well to the actual operation of it! Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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