How to check if the service is running?

You can check if a service is running using the systemctl command in Linux. Here’s how to do it:

1. Open a terminal.

2. Use the following command to check the status of the service. Replace service_name with the actual name of the service you want to check (e.g., sshd for SSH service, apache2 for Apache web server):

   systemctl status service_name
   

For example, to check the status of the SSH service, you would run:

systemctl status sshd

3. Interpreting the output:
   • Look for the line that starts with Active:. If it says active (running), the service is running.
   • If it says inactive or failed, the service is not running.

Alternatively, if you want to check if a specific port (like 8000) is being listened to, you can use:

netstat -tuln | grep :8000

This will show if any service is listening on port 8000. If there is output, it means a service is running on that port. If there is no output, then nothing is listening on that port.