Check for CVE-2021-44228 Vuln "Log4Shell" on a server by showing java and Log4J files version

A simple bash script who find any version of java and log4j to see if this server is vulnerable to CVE-2021-44228

./checkLog4J.sh
Java version
no java
checking for log4j vulnerability...
If you see no output above this line, you are safe. Otherwise check the listed files and packages.