


3 ways to check: 1. Execute the "sudo systemctl status apache service name" command. If there is the "running" keyword in the output result, it means it is running. 2. Execute the "service httpd status" command. If the output result contains the "running" keyword, it means it is running. 3. Execute the "chkconfig --list" command. If the output result contains the "httpd" keyword, it means it is running. .
#The operating environment of this tutorial: linux7.3 system, Dell G3 computer.
Apache is the world's most popular cross-platform HTTP web server, commonly used on Linux and Unix platforms to deploy and run web applications or websites. Importantly, it is easy to install and has a simple configuration.
3 ways to check whether apache is running in Linux
1. Use the Systemctl tool
Systemctl is a utility used to control system and service managers; it is used to start, restart, stop services and beyond. systemctl status subcommand, as name status is used to view the status of the service. You can use it for the above purposes, as follows:
$ sudo systemctl status apache2 #Debian/Ubuntu
2. Use Command service httpd status command to check the startup status of apache
If stopped appears, it means that the service is stopped. If running appears, it means the service is started.
3. Use the command chkconfig --list
command to view the startup status of apache
As shown in the figure: If the apache service has been started, then there will be the httpd keyword
Related recommendations: "Linux Video Tutorial"
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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.

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.

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.

The core components of the Linux system include the kernel, file system, and user space. 1. The kernel manages hardware resources and provides basic services. 2. The file system is responsible for data storage and organization. 3. Run user programs and services in the user space.

Maintenance mode is a special operating level entered in Linux systems through single-user mode or rescue mode, and is used for system maintenance and repair. 1. Enter maintenance mode and use the command "sudosystemctlisolaterscue.target". 2. In maintenance mode, you can check and repair the file system and use the command "fsck/dev/sda1". 3. Advanced usage includes resetting the root user password, mounting the file system in read and write mode and editing the password file.

Maintenance mode is used for system maintenance and repair, allowing administrators to work in a simplified environment. 1. System Repair: Repair corrupt file system and boot loader. 2. Password reset: reset the root user password. 3. Package management: Install, update or delete software packages. By modifying the GRUB configuration or entering maintenance mode with specific keys, you can safely exit after performing maintenance tasks.

Linux network configuration can be completed through the following steps: 1. Configure the network interface, use the ip command to temporarily set or edit the configuration file persistence settings. 2. Set up a static IP, suitable for devices that require a fixed IP. 3. Manage the firewall and use the iptables or firewalld tools to control network traffic.

Maintenance mode plays a key role in Linux system management, helping to repair, upgrade and configuration changes. 1. Enter maintenance mode. You can select it through the GRUB menu or use the command "sudosystemctlisolaterscue.target". 2. In maintenance mode, you can perform file system repair and system update operations. 3. Advanced usage includes tasks such as resetting the root password. 4. Common errors such as not being able to enter maintenance mode or mount the file system, can be fixed by checking the GRUB configuration and using the fsck command.


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