Tomcat启动报错：This file is needed to run this program
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Tomcat版本为 8.5.29。
1.情景
kill调用tomcat进程后，重启tomcat报如下错误：
Cannot find /usr/local/apache-tomcat-8.5.29/bin/setclasspath.sh This file is needed to run this program
2.解决方法
编辑 catalina.sh，发现前两行多了如下内容：
export CATALINA_BASE=$CATALINA_BASE2
export CATALINA_HOME=$CATALINA_HOME2
于是注释掉这两行，重启tomcat成功。至于为什么多了这两行，不晓得原因。怎么发现这两行的呢，对比了下相同版本的tomcat的 catalina.sh
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