Question

Write variables to file as %VAR% not as the value of the variable, as well ask making tasklist function properly when redirecting output.

Code im using to write to file:

echo tasklist /FI "IMAGENAME eq %ZOEXT%" 2>NUL | find /I /N "%ZOEXT%">NUL >> boot.bat
echo if "%ERRORLEVEL%"=="1" start /d "%ZODIR%" %ZOEXT% >> boot.bat

Result:

tasklist /FI "IMAGENAME eq Zoiper.exe"  
if "0"=="1" start /d "C:\Documents and Settings\mgladman\Desktop\Zoip\Zoiper Communicator\" Zoiper.exe 

What I want added to boot.bat:

tasklist /FI "IMAGENAME eq %ZOEXT%" 2>NUL | find /I /N "%ZOEXT%">NUL
if "%ERRORLEVEL%"=="1" start /d "%ZODIR%" %ZOEXT%

If you want i can publish whole code not just segment, it is a cool script 😛 Just has this small issue.

Only “workaround” i can think is to make the first script, to echo echo in the first file and write the correct system data (this has to be a portable script, so that would work, but would be messy as)

Answer 1

You can escape the % using ^ if you are in command line.

For example:

set var=test
echo %var%

echoes test

set var=test
echo ^%var^%

echoes %var%

In batch file you have to use double % –

set var=1
echo %%var%%

echoes %var%