Bootstrap.jar missing in tomcat

Hello friends

I am unable to find bootstrap.jar file in tomcat/bin directory when I run startup.sh its just shows tomcat started but when I grep for tomcat process nothing is found. If we run shutdown.sh it shows below error please help.

[ec2-user@ip-172-31-42-198 bin]$ cd …/
[ec2-user@ip-172-31-42-198 tomcat]$ sudo mkdir logs
[ec2-user@ip-172-31-42-198 tomcat]$ cd bin/
[ec2-user@ip-172-31-42-198 bin]$ sudo ./startup.sh
Using CATALINA_BASE: /opt/tomcat
Using CATALINA_HOME: /opt/tomcat
Using CATALINA_TMPDIR: /opt/tomcat/temp
Using JRE_HOME: /usr
Using CLASSPATH: /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar
Tomcat started.

[ec2-user@ip-172-31-42-198 bin]$ ps -aefww | grep tomcat
ec2-user 2659 2426 0 05:29 pts/0 00:00:00 grep --color=auto tomcat

[ec2-user@ip-172-31-42-198 bin]$ sudo ./shutdown.sh
Using CATALINA_BASE: /opt/tomcat
Using CATALINA_HOME: /opt/tomcat
Using CATALINA_TMPDIR: /opt/tomcat/temp
Using JRE_HOME: /usr
Using CLASSPATH: /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar
Error: Could not find or load main class org.apache.catalina.startup.Bootstrap
[ec2-user@ip-172-31-42-198 bin]$