unkilledfore, попробуйте этот BAT-файл:
Код:

@ECHO OFF
SET SettingsFile=%APPDATA%\.myfolder\settings.xml
SET StatusFile=%APPDATA%\.myfolder\stat.xml
FOR /F "tokens=7 delims== " %%I IN ('FINDSTR default "%SettingsFile%"') DO (
SET Value=%%~I
)
SETLOCAL ENABLEDELAYEDEXPANSION>status_new.xml
FOR /F "tokens=4" %%I IN ('FINDSTR %Value% "%StatusFile%"') DO (
IF %%I==created="%Value%" (
FOR /F "usebackq tokens=*" %%J IN ("%StatusFile%") DO (
SET "VAR1=%%J"
SET /P "VAR2=!VAR1:offline=online!" 0>nul 1>>stat_new.xml
ECHO.>>stat_new.xml
)
TYPE stat_new.xml>"%StatusFile%"
))
DEL stat_new.xml