List of agent commands and the purpose.

1.status /start/ stop of the Datadog Agent
systemctl status datadog-agent

2.Agent failed to start.
journalctl -u datadog-agent.service

3.To test an Agent check
datadog-agent check

4.List out the config check.
datadog-agent configcheck

1. To view all the agent configuration.
   datadog-agent config

2. Display the hostname of the server.
   datadog-agent hostname

3. check the agent version.
   datadog-agent version