@Haeckli

It seems like the latest version (2021年12月20日) does not redirect the output anmore. Instead all output goes to the screen and the output file has 0 bytes length.... Did I miss anything?
(it works as expected in vers: 2021年12月17日)

See sample screen output below:

C:\log4j>java -jar log4j-detector-2021年12月20日.jar c:\log4j\Test > test.txt
-- github.com/mergebase/log4j-detector v2021.12.20 (by mergebase.com) analyzing paths (could take a while).
-- Note: specify the '--verbose' flag to have every file examined printed to STDERR.
-- No vulnerable Log4J 2.x samples found in supplied paths: [c:\log4j\Test]
-- Congratulations, the supplied paths are not vulnerable to CVE-2021-44228 or CVE-2021-45046 ! :-)

C:\log4j>dir
21.12.2021 15:12

.
21.12.2021 15:12 ..
20.12.2021 12:11 59.642 log4j-detector-2021年12月20日.jar
21.12.2021 15:04 Test
21.12.2021 15:12 0 test.txt
6 Datei(en), 113.731 Bytes
<<<<<<<