windows - How can I load the contents of a text file into a batch file variable?

Question

I need to be able to load the entire contents of a text file and load it into a variable for further processing.

How can I do that?

---

Here's what I did thanks to Roman Odaisky's answer.

SetLocal EnableDelayedExpansion
set content=
for /F "delims=" %%i in (test.txt) do set content=!content! %%i

echo %content%
EndLocal

Answer 1

If your set command supports the /p switch, then you can pipe input that way.

set /p VAR1=<test.txt
set /? |find "/P"

The /P switch allows you to set the value of a variable to a line of input entered by the user. Displays the specified promptString before reading the line of input. The promptString can be empty.

This has the added benefit of working for un-registered file types (which the accepted answer does not).