Sesi Tanya & Jawab Hari ini hadir untuk memberi kami SuperUser - subdivisi Stack Exchange, pengelompokan situs web Q & A berbasis komunitas.
Pertanyaan
Pembaca SuperUu Luu Vinh Phuc ingin tahu mengapa dir *. * Mendaftar semua file dan folder:
When I run the dir *.* command, it produces unexpected results. Even files and folders without any dot in the name are listed. For example:
Mengapa dir *. * Daftar semua file dan folder?
Jawabannya
Penyelia SuperUser, Fleet Command memiliki jawaban untuk kami:
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 “.”.
Memiliki sesuatu untuk ditambahkan ke penjelasan? Bicaralah di komentar. Ingin membaca lebih banyak jawaban dari pengguna Stack Exchange yang paham teknologi lainnya? Lihat diskusi lengkap di sini.