File dung

the file dung or file (named) extension (English. file extension) is the last part of a file name and with one point is usually separated. The file dung is often used, in order to make , read without the file the format in of a file before recognizableto have.

Example: name.txt a simple text file marks.

Under some usual operating systems, particularly Windows, are assigned to file endings certain applications (file allocations). If one selects a file in a file manager, this is opened with accordingly assigned application.Other operating systems, like Mac OS, AmigaOS or UNIX, have more sophisticated concepts for the determination of a file format and to use the file dung for other purposes (e.g. for the version or indication of platform with libraries).

Over the file dung cannot be determined surely,whether a file is actually present in the indicated file format. This goes only, if one and/or. the operating system the file opens and the information in the file head evaluates.

The actually more favourable marking of the type of file in separately stored file meta data (a form of Out OF bound - signaling) unfortunately lost with the dominance of the Microsoft operating systems in the far use at practical meaning.

Another concept for the determination of the file format is the indication of the type of MIME.

see also

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