Linux servers are popular for their stability and flexibility, factors that make them a preferred choice for businesses and organizations when it comes to managing various services. Services that run under a Linux server can range from web services to database services, DNS servers, mail servers, and many others.
As a Linux system administrator, it's important to periodically review these running services to manage resources, check their statuses, and troubleshoot issues, ensuring the health and performance of the server.
Linux has a variety of tools to achieve this, such as: systemctl, service, netstat, ss and lsof.
For example, the command systemctl is widely used on Linux systems to list all running services:
systemctl --type=service
This command will show a list of all active services along with their current status. It is a necessity for server management and should be part of any Linux system administrator's toolbox.