How do I echo and send console output to a file in a bat script?

No, you can't with pure redirection.
But with some tricks (like tee.bat) you can.

I try to explain the redirection a bit.

You redirect one of the ten streams with > file or < file
It is unimportant, if the redirection is before or after the command, so these two lines are nearly the same.

dir > file.txt
> file.txt dir

The redirection in this example is only a shortcut for 1>, this means the stream 1 (STDOUT) will be redirected.
So you can redirect any stream with prepending the number like 2> err.txt and it is also allowed to redirect multiple streams in one line.

dir 1> files.txt 2> err.txt 3> nothing.txt

In this example the "standard output" will go into files.txt, all errors will be in err.txt and the stream3 will go into nothing.txt (DIR doesn't use the stream 3).
Stream0 is STDIN
Stream1 is STDOUT
Stream2 is STDERR
Stream3-9 are not used

But what happens if you try to redirect the same stream multiple times?

dir > files.txt > two.txt

"There can be only one", and it is always the last one!
So it is equal to dir > two.txt

Ok, there is one extra possibility, redirecting a stream to another stream.

dir 1>files.txt 2>&1 

2>&1 redirects stream2 to stream1 and 1>files.txt redirects all to files.txt.
The order is important here!

dir ... 1>nul 2>&1
dir ... 2>&1 1>nul

are different. The first one redirects all (STDOUT and STDERR) to NUL,
but the second line redirects the STDOUT to NUL and STDERR to the "empty" STDOUT.

As one conclusion, it is obvious why the examples of Otávio Décio and andynormancx can't work.

command > file >&1
dir > file.txt >&2

Both try to redirect stream1 two times, but "There can be only one", and it's always the last one.
So you get

command 1>&1
dir 1>&2

And in the first sample redirecting of stream1 to stream1 is not allowed (and not very useful).

Hope it helps.

If you don't need the output in real time (i.e. as the program is writing it) you could add

type windows-dir.txt

after that line.

The solution that worked for me was: dir > a.txt | type a.txt.

command > file >&1

I made a simple C# console which can handle real-time output to both cmd screen and log

class Tee
{
    static int Main(string[] args)
    {
        try
        {
            string logFilePath = Path.GetFullPath(args[0]);

            using (StreamWriter writer = new StreamWriter(logFilePath, true))
            {
                for (int value; (value = Console.In.Read()) != -1;)
                {
                    var word = Char.ConvertFromUtf32(value);
                    Console.Write(word);
                    writer.Write(word);
                }
            }
        }
        catch (Exception)
        {
            return 1;
        }
        return 0;
    }
}

The batch file usage is the same as how you use Unix tee

foo | tee xxx.log

And here is the repository which includes the Tee.exe in case you don't have tool to compile https://github.com/iamshiao/Tee

I think you want something along the lines of this:

echo Your Msg> YourTxtFile.txt

Or if you want a new line:

echo Your Msg>> YourTxtFile.txt

These commands are great for logs.

Note: This will sometimes glitch and replace the whole text file on my computer.

Another Note: If the file does not exist, it will create the file.