tomcat version

Ubuntu
/usr/share/tomcat8/bin/version.sh
results

Using CATALINA_BASE:   /usr/share/tomcat8
Using CATALINA_HOME:   /usr/share/tomcat8
Using CATALINA_TMPDIR: /usr/share/tomcat8/temp
Using JRE_HOME:        /usr
Using CLASSPATH:       /usr/share/tomcat8/bin/bootstrap.jar:/usr/share/tomcat8/bin/tomcat-juli.jar
NOTE: Picked up JDK_JAVA_OPTIONS:  --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED
Server version: Apache Tomcat/8.5.39 (Ubuntu)
Server built:   Sep 9 2019 19:47:51 UTC
Server number:  8.5.39.0
OS Name:        Linux
OS Version:     4.15.0-112-generic
Architecture:   amd64
JVM Version:    11.0.8+10-post-Ubuntu-0ubuntu118.04.1
JVM Vendor:     Ubuntu

Amazon Linux (AL2)
/usr/sbin/tomcat version