查看tomcat的版本

进入tomcat/bin目录下，执行version.sh

sh version.sh
Using CATALINA_BASE: /home/test/tomcat
Using CATALINA_HOME: /home/test/tomcat
Using CATALINA_TMPDIR: /home/test/tomcat/temp
Using JRE_HOME: /usr
Using CLASSPATH: /home/test/tomcat/bin/bootstrap.jar:/home/test/tomcat/bin/tomcat-juli.jar
Server version: Apache Tomcat/8.5.40
Server built: Apr 10 2019 14:31:19 UTC
Server number: 8.5.40.0
OS Name: Linux
OS Version: 3.10.0-957.el7.x86_64
Architecture: amd64
JVM Version: 1.8.0_181-b13
JVM Vendor: Oracle Corporation