Recupération de variables sous dos

C:> bb 
envoye 4 
recu 4 
perdu 0 
minimum 0 
minimum 1 
minimum 0 

C:>type bb.bat 
@echo off 
setlocal enableDelayedExpansion 
ping 192.168.1.1 > ping.txt 
for /f "tokens=1-11" %%a in ('find "Paquets" ^< ping.txt') do ( 
        set x=%%d 
        echo envoye !x:,=! 
        set x=%%g 
        echo recu !x:,=! 
        set x=%%j 
        echo perdu !x:,=! 
) 
for /f "tokens=1-9" %%a in ('find "Minimum" ^< ping.txt') do ( 
        set x=%%c 
        echo minimum !x:ms,=! 
        set x=%%f 
        echo minimum !x:ms,=! 
        set x=%%i 
        echo minimum !x:ms=! 
)