linux安装tomcat后启动报错：
Cannot find ./catalina.sh
The file is absent or does not have execute permission
This file is needed to run this program
原因：无权限
解决方法：
1. chmod +x /usr/tomcat7/bin/*.sh （亲测可用） 2. chmod 755 /usr/tomcat7/bin/*.sh 3. chmod 777 /usr/tomcat7/bin/*.sh
参考：
1.https://blog.****.net/u012599988/article/details/44080673
2.https://blog.****.net/qq_32600929/article/details/79682864