The Web Application Server has its own subtree in the configuration tree. Look for a script like SASServer_1.sh, and use it to stop and start the WAS. Mind that both processes take some time, so you should use the ps command to verify that the tomcat is gone before starting it again.
The SAS Users Group for Administrators (SUGA) is open to all SAS administrators and architects who install, update, manage or maintain a SAS deployment.