JSI Tip 6394. How can I test if a batch command failed or succeeded?

I introduced conditional processing symbols in tip 0290:

The double ampersand (&&) causes the command following this symbol to run only if the command preceding the symbol is successful.

The double pipe (||) causes the command following this symbol to run only if the command preceding the symbol fails.

Examples

pushd \ServerNameShareName||goto NoAccess

If the command fails, goto NoAccess will be executed.

pushd \ServerNameShareName&&goto popit
@echo The user has no access
goto :EOF
:popit
REM Do stuff while the current folder is \ServerNameShareName
popd

If the command is successful, goto popit is executed, otherwise the error is echoed.