How to get integer of free disk space in Batch file?

Question

I\'m trying to get integer of free disk space in Batch file. This is a my (very) simple code.

@echo off
wmic logicaldisk get freespace >> freespace.log         


        

Answer 1

I second @dbenham's recommendation to switch to PowerShell (or at least VBScript or JScript). However, if you want to stick with batch and don't need exact numbers you could do something like this:

@echo off

setlocal EnableDelayedExpansion

for /f %%v in ('wmic logicaldisk get freespace ^| findstr /r "[0-9]"') do (
  set val=%%v
  set val=!val:~-6!
  set /a sum+=val
)

echo !sum!

endlocal

The line set val=!val:~-6! removes the last 6 digits from each value. That way you can calculate with Megabytes instead of Bytes, but (obviously) lose some precision, because the value is truncated (and not rounded correctly).