在遭到破坏的系统中查找相关内容时，这是非常有用的内容，因为攻击者通常会删除日志以隐藏他们的踪迹。
This is a handy thing to look for when investigating a compromised system because attackers often delete logs to hide their tracks.
然后文件系统来执行文件操作或事务。一旦操作完成，相关日志就会被从日志文件中删除。
Then the file system "plays" each operation or transaction and once the operation is completed it is deleted from the journal.
当系统中不再存在属于旧模式的日志记录时，影子复制将被自动删除，系统中就只有新的主复制。
After the log records pertaining to older schema no longer exist in the system, the shadow replicate is automatically deleted and system only has new master replicates.
清单5显示了一个Linux系统，其中意外地删除了Apache日志，我正使用grep工具查找是否有人打开了该文件。
Listing 5 shows a Linux system where an Apache log has accidentally been deleted, and I am using the grep tool to find out if anyone has it open.
如果文件系统的利用率达到80%，那么checkspace就会运行logrotate，后者会根据需要压缩和删除日志文件。
If more than 80 percent of the filesystem is full, checkspace runs logrotate, which compresses and prunes log files as necessary.
因此，保护系统日志安全，不被内部用户或外部入侵者修改或删除显得尤为重要。
So it is vital to protect system logs without being modified or deleted by inside users or outside intruders.
因此，保护系统日志安全，不被内部用户或外部入侵者修改或删除显得尤为重要。
So it is vital to protect system logs without being modified or deleted by inside users or outside intruders.
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