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Jautājums
SuperUser lasītājs Luu Vinh Phuc vēlas uzzināt, kāpēc dir *. * Uzskaitīti visi faili un mapes:
When I run the dir *.* command, it produces unexpected results. Even files and folders without any dot in the name are listed. For example:
Kāpēc dir *. * Uzskaitīt visus failus un mapes?
Atbilde
SuperUser atbalstītājs Fleet Command ir atbilde mums:
The DIR command comes from a time when:
- A period (.) was not allowed as a character in file or folder names
- File and folder names were restricted to 8 characters for names and 3 characters for extensions
Therefore, by that standard, *.* meant whatever the name and whatever the extension. It did not mean a string containing a “.”, which may or may not have characters before or after the “.”.
Microsoft’s policy is preserving backward compatibility, so that interpretation of *.* is retained. But in Windows PowerShell, *.* means a string containing a “.”, which may or may not have characters before or after the “.”.
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