master file

基本解释

A file which is a collection of change records used to update a master file in batch processing.
修改主文件的全部修改记录的集合所构成的文件。
The -f option allows you to specify a master file containing search items for which you search frequently.
f 选项让我们可以指定一个包含搜索项的主文件，其中可以列出经常搜索的内容。
Instead, the file's entry in the Master File Table is marked as deleted and its clusters are freed up to store new data.
相反，该文件的主文件表项被标记为删除，并释放其群集达存储新数据。

Take the case of one Granick client who used nothing more than a standard Web browser to discover the master password file of one Internet service provider that was not locked away as well as it should have been.
FORBES: The Lawyer Hackers Call
When all the finishing touches are complete, the master copy of the movie will reside not as a film negative but as a computer file, several terabytes in size (exactly how many terabytes, no one yet knows).
FORBES: Attack Of The Digital Movie