在C盘的目录下建立一个名为ssd2.txt的字目录,用dos命令怎么写?

正确答案应该是：

copy con yourfilename

完了按ctrl+z,再按回车退出。注意如果按ctrl+c会删除文件

Md ssd2.txt

为什么你建目录还要扩展名呢？
所有dos指令都可以在你的cmd shell中输入help指令查看啦。

ASSOC Displays or modifies file extension associations
AT Schedules commands and programs to run on a computer.
ATTRIB Displays or changes file attributes.
BREAK Sets or clears extended CTRL+C checking.
CACLS Displays or modifies access control lists (ACLs) of files.
CALL Calls one batch program from another.
CD Displays the name of or changes the current directory.
CHCP Displays or sets the active code page number.
CHDIR Displays the name of or changes the current directory.
CHKDSK Checks a disk and displays a status report.
CHKNTFS Displays or modifies the checking of disk at boot time.
CLS Clears the screen.
CMD Starts a new instance of the Windows 2000 command interpreter.
COLOR Sets the de