CODEWITHSUNDEEP
windowsbatch-filecmdbcdedit
Schesan Lenovoa
Schesan Lenovoa

Reputation: 11

How can you define a bcdedit value from a variable by batch (tokens)?

This command shows in an admin CMD how many seconds the boot manager waits for the standard operating system to boot automatically:

bcdedit /enum | find "timeout"

Do I want to press the output value in seconds into an environment variable in batch? But it doesn't work like this:

for /f "tokens=2*" %%a in ('bcdedit /enum | find "timeout"') do set "value=%%a"
echo %value%
pause
exit

Does anyone know how to set up the token command?

Upvotes: 0

Views: 825

Answers (2)

Ricardo Bohner
Ricardo Bohner

Reputation: 365

You have to use an escape character "^" before the | and also the script has to run as admin because the bcdedit command requires admin privileges.

@echo off

net session >nul 2>&1 || (powershell start -verb runas '"%~0"' &exit /b)

for /f "tokens=2*" %%a in ('bcdedit /enum ^| find /i "timeout"') do set "value=%%a"
                                                               
echo %value%
pause
exit

Upvotes: 1

Compo
Compo

Reputation: 38589

I would first of all ensure that I'm only outputting the information under the appropriate identifier, {bootmgr}. Then I would not use the English language only string timeout.

From a window 'Run as administator':

For /F "Delims=" %G In ('%SystemRoot%\System32\bcdedit.exe /Enum {bootmgr} 2^>NUL ^| %SystemRoot%\System32\findstr.exe /RC:"[ ][ ]*[0123456789][0123456789]*$"') Do @For %H In (%G) Do @Set "$=%H"

Or from a 'Run as administrator':

@Echo Off
SetLocal EnableExtensions
Set "$=" & For /F "Delims=" %%G In (
    '%SystemRoot%\System32\bcdedit.exe /Enum {bootmgr} 2^>NUL^
    ^|%SystemRoot%\System32\findstr.exe /RC:"[ ][ ]*[0123456789][0123456789]*$'
) Do For %%H In (%%G) Do Set "$=%%H"

In this example the number of seconds from a successful result should be saved as the string value of a variable accessible as %$%.

Upvotes: 0

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