How to enter root privileges in linux-Linux Operation and Maintenance-php.cn

Home

Operation and Maintenance

Linux Operation and Maintenance

How to enter root privileges in linux

little bottle

May 30, 2019 pm 02:02 PM

linux

The default root user of the system under Linux is not enabled. This is exactly the opposite of what MS Windows does. Windows XP will create an automatic login administrator user for you after installing the system. However, Linux does not The same point also greatly increases the security of the system, but at the same time it has some special requirements for our operation. Let's talk about how to enter root permissions in Linux

How to enter root privileges in linux

It is recommended to use root user privileges only when you want to modify system settings or install software.

1. Enable the root account

For desktop operating systems like Ubuntu, the root user is not enabled by default, that is, you cannot boot as the root user. Log in, enable the root user and set a password. Pay special attention to the fact that you can use the root permissions of other administrators without enabling the root account. Enabling the root account will increase the insecurity of the system.

Operation method:

Enter sudo passwd root in the terminal (i.e. change the root password), press Enter, and follow the prompts

2. Temporary in the terminal Use root authority

Directly enter sudo command you want to execute, and enter the current user password according to the prompts

3. Open a terminal with root authority

Directly enter sudo su [Note: not su]

Enter the password of the root user when the terminal prompts for a password

4. Of course, if you have special requirements, you must let root When the user logs in to the computer, of course I didn’t say anything. Go to System->Administration->Login System and open Security. (Security) tab, select Allow local administrator login (allow local system administrator to log in), so that you can enter the root user password to log in to the computer next time you turn on the computer.

5. For some important operations under graphics , such as installing software and modifying important system files, you need root permissions. You will be prompted to enter your password. Note that only root permissions are used at this time, not to log in as the root user.

When you enter the password in the terminal, the entered characters will not be displayed, and you will not see any reaction on the screen. This is normal and is for security reasons.

The above is the detailed content of How to enter root privileges in linux. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

The 5 Core Components of the Linux Operating SystemMay 08, 2025 am 12:08 AM

The five core components of the Linux operating system are: 1. Kernel, 2. System libraries, 3. System tools, 4. System services, 5. File system. These components work together to ensure the stable and efficient operation of the system, and together form a powerful and flexible operating system.

The 5 Essential Elements of Linux: ExplainedMay 07, 2025 am 12:14 AM

The five core elements of Linux are: 1. Kernel, 2. Command line interface, 3. File system, 4. Package management, 5. Community and open source. Together, these elements define the nature and functionality of Linux.

Linux Operations: Security and User ManagementMay 06, 2025 am 12:04 AM

Linux user management and security can be achieved through the following steps: 1. Create users and groups, using commands such as sudouseradd-m-gdevelopers-s/bin/bashjohn. 2. Bulkly create users and set password policies, using the for loop and chpasswd commands. 3. Check and fix common errors, home directory and shell settings. 4. Implement best practices such as strong cryptographic policies, regular audits and the principle of minimum authority. 5. Optimize performance, use sudo and adjust PAM module configuration. Through these methods, users can be effectively managed and system security can be improved.

Linux Operations: File System, Processes, and MoreMay 05, 2025 am 12:16 AM

The core operations of Linux file system and process management include file system management and process control. 1) File system operations include creating, deleting, copying and moving files or directories, using commands such as mkdir, rmdir, cp and mv. 2) Process management involves starting, monitoring and killing processes, using commands such as ./my_script.sh&, top and kill.

Linux Operations: Shell Scripting and AutomationMay 04, 2025 am 12:15 AM

Shell scripts are powerful tools for automated execution of commands in Linux systems. 1) The shell script executes commands line by line through the interpreter to process variable substitution and conditional judgment. 2) The basic usage includes backup operations, such as using the tar command to back up the directory. 3) Advanced usage involves the use of functions and case statements to manage services. 4) Debugging skills include using set-x to enable debugging mode and set-e to exit when the command fails. 5) Performance optimization is recommended to avoid subshells, use arrays and optimization loops.

Linux Operations: Understanding the Core FunctionalityMay 03, 2025 am 12:09 AM

Linux is a Unix-based multi-user, multi-tasking operating system that emphasizes simplicity, modularity and openness. Its core functions include: file system: organized in a tree structure, supports multiple file systems such as ext4, XFS, Btrfs, and use df-T to view file system types. Process management: View the process through the ps command, manage the process using PID, involving priority settings and signal processing. Network configuration: Flexible setting of IP addresses and managing network services, and use sudoipaddradd to configure IP. These features are applied in real-life operations through basic commands and advanced script automation, improving efficiency and reducing errors.

Linux: Entering and Exiting Maintenance ModeMay 02, 2025 am 12:01 AM

The methods to enter Linux maintenance mode include: 1. Edit the GRUB configuration file, add "single" or "1" parameters and update the GRUB configuration; 2. Edit the startup parameters in the GRUB menu, add "single" or "1". Exit maintenance mode only requires restarting the system. With these steps, you can quickly enter maintenance mode when needed and exit safely, ensuring system stability and security.

Understanding Linux: The Core Components DefinedMay 01, 2025 am 12:19 AM

The core components of Linux include kernel, shell, file system, process management and memory management. 1) Kernel management system resources, 2) shell provides user interaction interface, 3) file system supports multiple formats, 4) Process management is implemented through system calls such as fork, and 5) memory management uses virtual memory technology.

See all articles