文件系统

For example, when visiting a file, the FAT file system as a result of the file allocation table lists only the name of each file and the initial cluster, and did not say whether the document exists, and through their records in the folder to determine, and import folder and file allocation table is included in the index.

例如当访问一个文件时，由于FAT文件系统的文件分配表只列出了每个文件的名称及起始簇，并没有说明这个文件是否存在，而需要通过其所在文件夹的记录来判断，而文件夹的入口又包含在文件分配表的索引中。

Some file systems, such as NTFS file system, support compression or encryption for individual files and directories.

一些文件系统，像NTFS文件系统，对于个别的文件或目录支持压缩或加密。

However, the performance of conventional network file system or distributed file system is limited by the low usage of the file system cache and can not meet the application demand.

现有的网络文件系统或分布式文件系统已无法满足应用需求，因此需要对进一步提高机群文件系统性能的技术进行深入研究。

When a filesystem is mounted on a directory, the contents of the directory in the parent filesystem are no longer access ible, because every pathname, including the mount point, will refer to the mounted filesystem.

而将某个文件系统mount到一个目录，并没有改变这个目录下文件的内容，只是临时将目录的inode信息改变，使其指向另一个文件系统的跟inode节点。

In fact, NT system architecture (refer to Windows NT/2000/XP/2003) for each user of the system to establish their own recycle bin files, if file system partition is NTFS, will be kept in the "Recycler" the document folder, respectively, to each user's SID (user security identifiers, used to represent users, any two users of the identifier is different) the name of the Recycle Bin so that a similar "S-1-5-21-559421022 -1101046446-1443909855-1003 "This kind of name.

实际上，NT架构的系统（指Windows NT/2000/XP/2003）会为系统中的每个用户建立各自的回收站文件，如果分区文件系统是NTFS，则会保存在"Recycler"这个文件夹中，分别以每个用户的SID（用户安全标识符，用来代表用户，任何两个用户的标识符都不一样）做回收站的名字，就是类似"S-1-5-21-559421022-1101046446-1443909855-1003"这样的名字。

The title and bill of material in engineering drawings are important data source for product data integrated management. In order to reuse the CAD data, the paper presents an effective method for extracting part information from existing engineering drawings. Through analyzing the format of title and bill of material, several shape-position characteristics of tables are summed up from the view of macro-layout and microstructure. A new method to automatically extracting drawing information based on cell-grid and feature-point is proposed along with its algorithm principle and implementation steps. A software package based on the method mentioned above is developed and used in practice.

1引言工程图是工程设计的主要成果和制造加工的主要依据，CAD软件的广泛应用使得传统上对于纸质图纸的管理模式转变为对大量电子文件的管理模式·由于文件系统在实际应用中不能适应复杂大规模的管理模式，已经出现了各种各样的图档管理系统[1]·工程图中包含的零件信息在表现形式上体现纸格式的标准化为批量提取数据提供了可能性·作为计算机处理的对象，图纸信息自动识别成为数据管理和系统集成的一项关键技术·当前CAD管理系统所处理的数据对象比较复杂，面临由不同企业使用不同的绘图软件生成的图纸，其中的标题栏和明细栏或者由软件自动生

NFS goes to great lengths to make sure file handles are unique; it adds generation numbers for inodes and a file system ID to the filehandle in addition to the inode number.

网络文件系统花尽心思以确保文件标签file handle是独一无二；它为资讯编码inode添加每代的号码；此外，文件标签除了资讯编号外，还加上文件系统身份号ID。

Through sharing file between mainframe system and open system, these heterogeneous systems can realize unseaming integration basd on data and mutual operating basd on file system. It has great significance for combining of storage resources and taking a good advantage of the abundant application programs having existed on mainframe system and reducing the cost of data storing.

通过大型机系统与UNIX服务器、Windows服务器等开放系统之间的异构文件共享，各系统能在数据层面上实现无缝集成以及在文件系统的层面上实现交互，对于存储资源的整合、充分利用大型机已有的丰富业务软件以及降低企业的数据存储成本都具有十分重要的意义。

Technically, open gives direct access to the stdio filesystem calls in the system's C libraryit returns a new file object that is connected to the external file and has methods that map more or less directly to file calls on your machine.

技术实现上， open 通过调用系统C库直接访问stdio文件系统，它将返回一个连接到外部文件的新的文件对象。这个对象的很多方法直接或间接地映射到你系统的调用上。

Another journalled filesystem isthe Third Extended filesystem, the successor to the Second Extended filesystem. This has

另一种日志刑的文件系统是Third Extended文件系统，它是Second Extended 文件系统的继承者。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。