Which tool is recommended to view logs on the VM?

• A. vi
• B. cat
• C. nano
• D. journalctl

Answer: (D)

The recommended tool to view logs on the VM is journalctl. This command is specifically designed for querying and displaying messages from the journal, which is the logging system used by systemd in Linux environments. It provides a structured and efficient way to access log data, including filtering options to find specific entries, chronological viewing, and support for various output formats.

Using journalctl enables users to examine logs not just from the system but also from services that write to the journal, giving a comprehensive view of system activity and issues. This is particularly useful for administrators and developers who need to troubleshoot services running on the virtual machine.

While other text viewers like vi, cat, and nano can display log files, they do not provide the same level of functionality and ease of use for examining logs in a systematic manner as journalctl does. Vi and nano are primarily text editors, and cat simply concatenates and displays file content without any filtering or searching capabilities. Consequently, these tools lack the specialized features that simplify log management and analysis, which makes journalctl the most effective choice for this purpose.