What does > and >> mean in batch coding/ files?

Question

I found this great code i could put in my random event generator code and i need to test it separate first
@echo off
echo.|time|find "Current" >cu##ent.bat
echo set time=%%3> current.bat
call cu##ent.bat
del cu??ent.bat > nul
echo = | choice /c=%time%= temp2.bat > temp1.bat
echo shift>temp2.bat
echo shift>>temp2.bat
echo set RANDOM=%%9>>temp2.bat
call temp1.bat
del temp?.bat > nul
And some of it does not work so i have to modify it. so i needed to know what does > mean and what does >> mean thanks

Answer 1

Redirection Operators



> Writes the command output to a file or a device, such as a printer, instead of the Command Prompt window. It will overwrite an existing file.



< Reads the command input from a file, instead of reading input from the keyboard.



>> Appends the command output to the end of a file without deleting the information that is already in the file. It will create a file if none exists.



Redirecting to "nul" (the null device) just sends the output to nowhere and so just obliterates the output. Prevents it from being shown.

Answer 2

A single > tells Command to send the output to the specified file.



A double > tells Commands to append the output to the specified file.

Answer 3

you may't do it that way, yet once you've a sub referred to as Auto_Open which will run every time the excel report is open. So, in case you launch the excel report from the batch report your VBA code will run immediately