How to list the services in Linux?

Listing Services in Linux: A Comprehensive Guide

Introduction

Linux is a popular operating system that provides a wide range of services to its users. These services can be used for various purposes, such as managing files, sending emails, and even controlling the system’s hardware. In this article, we will guide you through the process of listing the services in Linux.

Step 1: Identify the Services

Before we can list the services, we need to identify which ones are available. Here are some steps to help you identify the services:

• Check the System Configuration: The first step is to check the system configuration. You can do this by running the command systemctl list-units --type=service in the terminal.
• Check the Services File: The next step is to check the services file. The services file is usually located at /etc/systemd/system/ or /etc/systemd/system.d/.
• Check the Service Status: Once you have identified the services, you can check their status by running the command systemctl status <service_name>.

Step 2: List the Services

Once you have identified the services, you can list them using the following command:

• List All Services: You can list all services using the command systemctl list-units --type=service.
• List Specific Services: You can list specific services using the command systemctl list-units --type=service --property= <property_name>.
• List Services by Name: You can list services by name using the command systemctl list-units --type=service --property=name=<service_name>.

Step 3: Filter the Services

You can filter the services by various criteria such as:

• Status: You can filter services by their status using the command systemctl list-units --type=service --property=status=<status_name>.
• Name: You can filter services by name using the command systemctl list-units --type=service --property=name=<service_name>.
• Type: You can filter services by their type using the command systemctl list-units --type=service --property=type=<type_name>.

Step 4: Filter the Services by Property

You can filter services by various properties such as:

• Status: You can filter services by their status using the command systemctl list-units --type=service --property=status=<status_name>.
• Name: You can filter services by name using the command systemctl list-units --type=service --property=name=<service_name>.
• Type: You can filter services by their type using the command systemctl list-units --type=service --property=type=<type_name>.

Step 5: Filter the Services by Property Value

You can filter services by their property value using the following command:

• Filter by Property Value: You can filter services by their property value using the command systemctl list-units --type=service --property=value=<property_name>=<value>.

Example Use Cases

Here are some example use cases for listing services in Linux:

• List All Services: You can list all services using the command systemctl list-units --type=service.
• List Specific Services: You can list specific services using the command systemctl list-units --type=service --property=name=<service_name>.
• List Services by Name: You can list services by name using the command systemctl list-units --type=service --property=name=<service_name>.
• List Services by Status: You can list services by status using the command systemctl list-units --type=service --property=status=<status_name>.
• List Services by Type: You can list services by type using the command systemctl list-units --type=service --property=type=<type_name>.

Tips and Tricks

Here are some tips and tricks for listing services in Linux:

• Use the systemctl Command: The systemctl command is the most commonly used command for listing services in Linux.
• Use the systemctl list-units Command: The systemctl list-units command is used to list all services.
• Use the systemctl status Command: The systemctl status command is used to check the status of a service.
• Use the systemctl list-units --type=service Command: The systemctl list-units --type=service command is used to list all services.
• Use the systemctl list-units --property=type=<type_name> Command: The systemctl list-units --property=type=<type_name> command is used to list services by type.

Conclusion

Listing services in Linux is a crucial step in managing the system. By following the steps outlined in this article, you can easily list the services in Linux and manage them effectively. Remember to use the systemctl command and the systemctl list-units command to list all services, and use the systemctl status command to check the status of a service. With these tips and tricks, you can efficiently manage your Linux system and keep it running smoothly.