Exam XK0-005 topic 1 question 55 discussion

The chattr +a command is used to set the "append only" attribute for a file or directory. This attribute ensures that once a file has been created, it cannot be deleted or modified. Any attempts to do so will result in a "permission denied" error. In this case, the command sets the "append only" attribute for the /opt/app/logs directory, which will prevent any changes to existing files or the deletion of files in that directory. New files can still be added to the directory, but their contents cannot be modified. This is useful in cases where the logs stored in the /opt/app/logs directory are critical for debugging or auditing purposes, and need to be kept for an extended period of time. The "append only" attribute helps to ensure the integrity of the logs, by preventing any accidental or malicious changes to the log files.

should be 'lsattr' not 'lsattz'