How to use cmd command in Linux system?

How to use command line operation in Linux system?

In Linux systems, the command line is a powerful tool for handling various tasks. Through the command line, users can perform various operations, such as file management, system configuration, network settings, etc. This article will introduce how to use some common command line commands in Linux systems, including operations such as viewing files, searching content, and modifying file permissions.

1. View files and directories

Use the ls command to list the files and directories in the current directory. For example:

ls

Use the ls -l command to display detailed information about files and directories. For example:

ls -l

2. Search file content

Use the grep command to search for specified content in the file. For example, search for the keyword "hello" in the file example.txt:

grep "hello" example.txt

3. Copy file

Use the cp command to copy the file. For example, copy the file file1.txt to the directory dir:

cp file1.txt dir/

4. Move the file

Use the mv command to move or rename the file. For example, move the file file1.txt to the directory dir and rename it to file2.txt:

mv file1.txt dir/file2.txt

5. Create Directory

Use the mkdir command to create a directory . For example, create a directory named test:

mkdir test

6. Modify file permissions

Use the chmod command to modify file permissions. For example, set the file file.txt to read, write and execute permissions:

chmod 777 file.txt

7. View system information

Use the uname command to view system information. For example, to view the system kernel version:

uname -a

8. View process information

Use the ps command to view the processes running in the system. For example, list the information of all current processes:

ps aux

The above are some examples of command line operations commonly used in Linux systems. By learning and using these commands, you can manage your Linux system more efficiently and perform various operations. Hope this article will be helpful to you.

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