Change directory to /opt/shrine/tomcat/webapps. Delete all the files and directories.
cd /opt/shrine/tomcat/webapps rm -rf *
Now change directory to /opt/shrine/tomcat/work, and delete all files and directories within that location too.
cd /opt/shrine/tomcat/work rm -rf *
Finally change directory to /opt/shrine/tomcat/temp, and delete all files and directories within that location.
cd /opt/shrine/tomcat/temp rm -rf *
Now change back to /opt/shrine/tomcat/webapps directory. Download the shrine-api.war into webapps. (SHRINE is now a single .war file.)
cd /opt/shrine/tomcat/webapps wget https://repo.open.catalyst.harvard.edu/nexus/content/groups/public/net/shrine/shrine-api-war/3.1.0/shrine-api-war-3.1.0.war -O shrine-api.war