The CentOS shutdown command is shutdown, and the syntax is shutdown [Options] Time [Information]. Options include: -h Stop the system immediately; -P Turn off the power after shutdown; -r restart; -t Waiting time. Time can be specified as now, minutes, or a specific time (hh:mm). Added information can be displayed in system messages.
CentOS shutdown command line
In CentOS systems, shutdown
command can be used to shut down. Here is its syntax:
<code class="bash">shutdown [选项] 时间[信息]</code>
Options:
Options | describe |
---|---|
-h
|
Stop the system to run level halt immediately. |
-P
|
Turn off the power after shutdown (only if the system supports it). |
-r
|
Restart the system. |
-t
|
Specifies the time (in seconds) to wait before shutdown. |
time:
You can specify the time using the following format:
- now : Turn off the power immediately.
- minutes : Turn off after the specified number of minutes (for example,
5
means shutdown after 5 minutes). - hh:mm : Turn off at the specified time (24-hour time, for example,
13:30
means shutdown at 1:30 pm).
information:
This parameter is used for the information displayed in the system message.
Example:
- Turn off the power immediately:
<code class="bash">shutdown now</code>
- Turn off after 5 minutes:
<code class="bash">shutdown 5</code>
- Restart at 1:30 pm:
<code class="bash">shutdown -r 13:30</code>
- Turn off the power and turn off the power:
<code class="bash">shutdown -P now</code>
- Shut down and display the message "maintenance":
<code class="bash">shutdown -h now "Maintenance in progress"</code>
The above is the detailed content of Centos shutdown command line. For more information, please follow other related articles on the PHP Chinese website!

CentOS is widely selected as a server operating system because it is stable, secure and free. 1.CentOS is based on RHEL, providing enterprise-level stability and a life cycle of up to 10 years. 2. It has rich software packages and strong community support. 3. Simple installation, use yum management software package, and intuitive configuration. 4. Improve server management efficiency through command line tools, regular backups and log management. 5. Optimize server performance by adjusting kernel and network parameters.

CentOS will continue to develop through CentOSStream in the future. CentOSStream is no longer a direct clone of RHEL, but is part of RHEL development. Users can experience the new RHEL functions in advance and participate in development.

The transition from development to production in CentOS can be achieved through the following steps: 1. Ensure the consistent development and production environment, use the YUM package management system; 2. Use Git for version control; 3. Use Ansible and other tools to automatically deploy; 4. Use Docker for environmental isolation. Through these methods, CentOS provides powerful support from development to production, ensuring the stable operation of applications in different environments.

CentOSStream is a cutting-edge version of RHEL, providing an open platform for users to experience the new RHEL functions in advance. 1.CentOSStream is the upstream development and testing environment of RHEL, connecting RHEL and Fedora. 2. Through rolling releases, users can continuously receive updates, but they need to pay attention to stability. 3. The basic usage is similar to traditional CentOS and needs to be updated frequently; advanced usage can be used to develop new functions. 4. Frequently asked questions include package compatibility and configuration file changes, and requires debugging using dnf and diff. 5. Performance optimization suggestions include regular cleaning of the system, optimizing update policies and monitoring system performance.

The reason for the end of CentOS is RedHat's business strategy adjustment, community-business balance and market competition. Specifically manifested as: 1. RedHat accelerates the RHEL development cycle through CentOSStream and attracts more users to participate in the RHEL ecosystem. 2. RedHat needs to find a balance between supporting open source communities and promoting commercial products, and CentOSStream can better convert community contributions into RHEL improvements. 3. Faced with fierce competition in the Linux market, RedHat needs new strategies to maintain its leading position in the enterprise-level market.

RedHat shut down CentOS8.x and launches CentOSStream because it hopes to provide a platform closer to the RHEL development cycle through the latter. 1. CentOSStream, as the upstream development platform of RHEL, adopts a rolling release mode. 2. This transformation aims to enable the community to get exposure to new RHEL features earlier and provide feedback to accelerate the RHEL development cycle. 3. Users need to adapt to changing systems and reevaluate system requirements and migration strategies.

CentOS stands out among enterprise Linux distributions because of its stability, security, community support and enterprise application advantages. 1. Stability: The update cycle is long and the software package has been strictly tested. 2. Security: Inherit the security features of RHEL, update and announce in a timely manner. 3. Community support: a huge community and detailed documentation to respond to problems quickly. 4. Enterprise applications: Support container technologies such as Docker, suitable for modern application deployment.

Alternatives to CentOS include AlmaLinux, RockyLinux, and OracleLinux. 1.AlmaLinux provides RHEL compatibility and community-driven development. 2. RockyLinux emphasizes enterprise-level support and long-term maintenance. 3. OracleLinux provides Oracle-specific optimization and support. These alternatives have similar stability and compatibility to CentOS, and are suitable for users with different needs.


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