Bash - how to check tomcat version?

In this short article we are going to show how to check tomcat version in Linux.

Solution is quite simple: go to bin/ directory in tomcat installation path and call version.sh script.

Simple steps:

1. find tomcat installation directory with:
   find / -type d -name "tomcat*"
   or call whereis tomcat8 replacing 8 with major version number,
2. go to bin/ directory,
   cd /path/to/tomcat/bin,
3. run ./version.sh,
4. find line started with Server version:.

Console example:

root@debian-server:~# find / -type d -name "tomcat*"
/etc/tomcat8
/var/cache/tomcat8
/var/lib/tomcat8
/var/log/tomcat8
/usr/share/tomcat8-root
/usr/share/doc/tomcat8-common
/usr/share/doc/tomcat8
/usr/share/tomcat8
/sys/fs/cgroup/pids/system.slice/tomcat8.service
/sys/fs/cgroup/devices/system.slice/tomcat8.service
/sys/fs/cgroup/systemd/system.slice/tomcat8.service

root@debian-server:~# cd /usr/share/tomcat8/bin

root@debian-server:/usr/share/tomcat8/bin# ./version.sh
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
Server version: Apache Tomcat/8.5.54 (Debian)
Server built:   Apr 25 2020 15:01:31 UTC
Server number:  8.5.54.0
OS Name:        Linux
OS Version:     4.9.0-11-amd64
Architecture:   amd64
JVM Version:    1.8.0_252-8u252-b09-1~deb9u1-b09
JVM Vendor:     Oracle Corporation