防止意外覆盖现有的文件
使用n>的输出重定向通常覆盖现有的文件。
We said that output redirection using n> usually overwrites existing files.
打开一个现有的文件。
现有的文件处理系统都是由一些单一命令组成的。
Most existing file processing systems are composed of several file processing commands.
忽略现有的文件。
造成混乱的另一个典型场景是意外地覆盖现有的文件。
Another typical doomsday scenario is the accidental overwriting of an existing file.
卷管理让您可以将存储空间添加到现有的文件系统，而不需破坏存储服务器。
Volume management allows you to add storage to the existing file system without disrupting the storage server.
在目录或者文件系统中设置或者删除继承，对于现有的文件不会产生任何影响。
Setting or removing inheritance on a directory or a file system has no effect on the existing files.
如果您希望在进行重命名的过程中删除现有的文件，那么可以添加- f标志。
If you want to "clobber" existing files as the rename progresses, add the -f flag.
这可以防止任何人创建新的文件，更重要的是可以防止删除现有的文件。
This stops everyone from creating new files and, more importantly, from deleting existing files.
您还应该注意，务必避免用要复制的文件意外地覆盖分区或现有的文件。
You should also be careful to ensure that you don't accidentally overwrite a partition, or existing files, with the files you are trying to copy.
应避免使用常用文件扩展名，因为它们会覆盖目标计算机上现有的文件关联。
You should avoid common file extensions, as they will overwrite existing file associations on the target computer.
在这些情况下，您需要使用本文中介绍的技巧，将现有的文件复制到新的文件系统。
In any of these situations, you need to use the techniques covered in this article to copy over the existing files to the file system.
您还可以使用Output选项将输出直接指向打印机、新文件、现有的文件或管道。
You can also direct the output to a printer, a new file, an existing file, or a pipe using the output option.
当然，rsync并非只能处理现有的文件：它还可以处理只在链路一端存在的文件和目录。
Of course, rsync isn't limited to existing files: It can also deal with files and directories that might be present only at one end of the link.
这个映射模型能够在UML-to-C#转换构型中被指定，这个转换保留着现有的文件中的代码元素的构成。
This mapping model can be specified in a UML-to-C# transformation configuration so that the transformation retains the existing organization of code elements among files.
本文还对在开发新的文件系统或者将现有的文件系统移植到AIX操作系统时所使用的接口和方法进行了简单的说明。
Brief explanations are also included of the interfaces and methods when developing a new file system, or when porting an existing file system to the AIX operating system.
注意，还可以重新挂载现有的文件系统并设置I/O 处理速率调整，这有助于调整已经在提供服务的磁盘的性能。
Note that you can also remount existing filesystems and set the I/O pacing, which can be helpful if you want to alter the performance of a disk that is already actively providing service.
如果您重命名某个文件组，然后将其部署到现有数据库，则将创建一个具有新名称的文件组，现有的文件组不会发生变化。
If you rename a filegroup and then deploy it to an existing database, a filegroup that has the new name is created and the existing filegroup does not change.
如果您将现有的文件系统(而不是现有的文件系统中的单个目录)移动到一个更大的分区，那么可以使用df的输出来确定当前文件系统的大小。
If you are moving an existing file system to a larger partition, (rather than a single directory within an existing file system) then use the output from df to determine the current file system size.
您可以将此步骤与现有的文件系统备份策略集成在一起，以确保所有相关的WebSphereApplicationServer信息都得到备份。
This step can be integrated with an existing file system backup strategy to ensure that all relevant WebSphere Application Server information is backed up.
如果存在一个现有的库文件，那么将目标文件添加到其中。
If there is an existing library file, the object files are added to it.
不过，为了简单起见，我将自己的新函数添加到现有的源文件中。
However, for the sake of simplicity, I add my new functions to an existing source file.
按照这种方式，可以使用现有的根文件系统并根据自己的需要进行调整。
In this way, you can use an existing root file system and tailor it to your specific needs.
证书可以从现有的内存结构或文件中导入。
The certificate can be imported from an existing memory structure or a file.
当然你可以只是转换现有的视频文件在PS P上面播放。
Of course you could just convert any existing video file to play on your PSP.
不要忘记，我们现有的EAR文件是一个用包装器包装原始的遗留服务实现的文件。
Don't forget, our existing EAR file is the one with the wrapper around the original legacy service implementation.
在创建了一个新的存档文件，或者修改了一个现有的存档文件之后，需要创建存档文件内容的索引，并将其作为该存档文件的一部分进行存储。
After a new archive is created or an existing one is modified, an index of archive contents needs to be created and stored as part of the archive.
现在，您可以从头开始进行消息流的开发、或从一个现有的WSDL文件、XSD文件或消息集进行消息流的开发。
You can now start message flow development from scratch, or from an existing WSDL file, XSD file, or message set.
与循环日志记录相比，当最后一个日志文件写满时，归档日志记录过程会创建一个新的日志文件，这样将来的事务就不会覆盖现有的日志文件。
In contrast to circular logging, the archival logging process creates a new log file when the last log file is filled so that future transactions will not overwrite existing log files.
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