/usr/share/tomcat7/ is in tomcat7-common 7.0.52-1ubuntu0.16.
This file is owned by root:root, with mode 0o755.
..
/usr/share/tomcat7/bin/
/usr/share/tomcat7/bin/bootstrap.jar
/usr/share/tomcat7/bin/catalina-tasks.xml
/usr/share/tomcat7/bin/catalina.sh
/usr/share/tomcat7/bin/configtest.sh
/usr/share/tomcat7/bin/daemon.sh
/usr/share/tomcat7/bin/digest.sh
/usr/share/tomcat7/bin/setclasspath.sh
/usr/share/tomcat7/bin/shutdown.sh
/usr/share/tomcat7/bin/startup.sh
/usr/share/tomcat7/bin/tomcat-juli.jar
/usr/share/tomcat7/bin/tool-wrapper.sh
/usr/share/tomcat7/bin/version.sh
/usr/share/tomcat7/lib/
/usr/share/tomcat7/lib/catalina-ant.jar
/usr/share/tomcat7/lib/commons-dbcp.jar
/usr/share/tomcat7/lib/commons-pool.jar
/usr/share/tomcat7/lib/el-api.jar
/usr/share/tomcat7/lib/jsp-api.jar
/usr/share/tomcat7/lib/servlet-api.jar
/usr/share/tomcat7/lib/tomcat-i18n-es.jar
/usr/share/tomcat7/lib/tomcat-i18n-fr.jar
/usr/share/tomcat7/lib/tomcat-i18n-ja.jar