Hello Guys,
As we are aware uptime command in Linux will show how long is the server up.
Last reboot - This will show you the last reboot of the system.
To check application uptime/running time:
ps -ef | grep <service name>
eg: ps -ef | grep <tomcat> (If your application uses Tomcat)
ps -ef | grep <jboss> (If your application uses Jboss)