Question: This batch file releases a build from TEST to LIVE. I want to add a check constraint in this file that ensures there is an accomanying release document in a specific folder.

```
"C:\Program Files\Windows Resource Kits\Tools\robocopy.exe" "\\testserver\testapp$"        
"\\liveserver\liveapp$" *.* /E /XA:H /PURGE /XO /XD ".svn" /NDL /NC /NS /NP
del "\\liveserver\liveapp$\web.config"
ren "\\liveserver\liveapp$\web.live.config" web.config

```

So I have a couple of questions about how to achieve this...

1. There is a `version.txt` file in the `\\testserver\testapp$` folder, and the only contents of this file is the build number (for example, 45 - for build 45)
How do I read the contents of the `version.txt` file into a variable in the batch file?
2. How do I check if a file ,`\\fileserver\myapp\releasedocs\ {build}.doc`, exists using the variable from part 1 in place of {build}?

Answer: 
You can read multiple variables from file like this:

```
for /f "delims== tokens=1,2" %%G in (param.txt) do set %%G=%%H

```

where param.txt:

```
PARAM1=value1
PARAM2=value2
...

```
just do:

```
type version.txt

```

and it will be displayed as if you typed:

```
set /p Build=<version.txt
echo %Build%

```