Meta data of text file

besides file name wh开发者_JAVA技巧at meta data do a plain text file contain ?

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I can think of lots of metadata that even a plain text file has -- creator, size, permissions, last accessed time, last modified time, etc. -- some of which probably depend on which OS you're talking about. I'd suggest looking at the directory operations and/or the file data structures in the system libraries on the particular OS for a more complete list for each particular OS.

Depending on the usage of the file, it might contain some metadata -- for example, a script file might indicate the program used to run the script at the top -- but in general a plain text file doesn't contain metadata itself.

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What file system? Strictly speaking, a "plain text file" doesn't contain any meta data, not even the name of the file. All of that is handled by the file system.

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On Linux (not in the file content, but in the filesystem):

• Permissions
• Owner
• Group
• Size
• References Count
• Date of last change
• Name

There are a few others (like a readonly flag), but you will usually not need them.

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Depends what you mean by "meta data". The OS tracks filename, file size, create and modified dates, attributes, etc. for ALL files--not just text files.

But I'm not sure I even consider that meta data. To me I think of a plain text file as not containing any meta data at all.

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Filename, size etc is file system metadata.

A plain text file with content "a b c" could have encoding as metadata