Two ways to create file using 'doc'.

Here are two ways to create file using 'doc' command:

　　Method i:

 copy con [file name][enter key]
 [content]
 ctrl+z
 for instance,
 copy con [hello.txt][enter key]
 hello
 ctrl+z

　　Method ii:

 echo [content]>[file name][enter key]
 for instance,
 echo hello>hello.txt