How can you check which services are enabled at startup?

To determine which services are enabled at startup, using the command "systemctl list-unit-files --type=service --state=enabled" is the most effective approach. This command specifically targets service unit files and lists those that are enabled to start automatically when the system boots.

Breaking it down further:

• "systemctl" is the command-line tool used to interact with the systemd system and service manager.

• "list-unit-files" is the subcommand used for listing all unit files, including services.

• "--type=service" filters the results to show only service unit files.

• "--state=enabled" narrows it down to include only those services that are set to start automatically at boot.

By executing this command, an administrator can quickly identify which services are configured to start with the system, thereby streamlining troubleshooting or optimization tasks related to startup processes. This clarity is essential for maintaining and managing system performance in a Linux environment.