欲把当前目录下的 file1.txt 复制为 file2.txt,正确的命令是()。
Acopy?file1.txt?file2.txt
Bcp?file1.txt file2.txt
Ccat?file2.txt?file1.txt
Dcat?file1.txt?>?file2.txt?
Acopy?file1.txt?file2.txt
Bcp?file1.txt file2.txt
Ccat?file2.txt?file1.txt
Dcat?file1.txt?>?file2.txt?