It is a good practice to guard log statements so they are turned on during error and debugging situations only.

最佳实践应是对日志语句加以保护，使其仅在出错和进行调试的情况下打开。

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For example, if you want to allow certain users to access guard points only if the users log in via SSH and Telnet, add | authenticator | in front of the login processes as shown in Listing 2.

例如，如果您希望仅允许通过ssh和telnet登录的特定用户访问保护点，那么需要在登录进程的前面添加| authenticator |，如清单2所示。

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Looks for cases where the log method is called outside the guard clause.

寻找在监护子句外部调用log方法的情况。

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He turned and walked into a log-walled guard hut that I had not noticed before.

NEWYORKER: The Kingpins

Here is a selection of log entries that illustrate just how the Coast Guard grappled with a deadly maritime explosion that turned from a search-and-rescue operation to environmental catastrophe in a space of days.

WSJ: Coast Guard Log Details Early Hours of Spill