参考：http://dearseven.blog.163.com/blog/static/1005379222013764440253/
linux 下启动tomcat
[root@test233 bin]# sh startup.sh
Cannot find ./catalina.sh
The file is absent or does not have execute permission
This file is needed to run this program
解决办法：
给.sh文件授权
[root@test233 bin]# chmod +x *.sh
再启动，成功
[root@test233 bin]# sh startup.sh
Using CATALINA_BASE: /home/tomcat2
Using CATALINA_HOME: /home/tomcat2
Using CATALINA_TMPDIR: /home/tomcat2/temp
Using JRE_HOME: /home/jdk
Using CLASSPATH: /home/tomcat2/bin/bootstrap.jar:/home/tomcat2/bin/tomcat-juli.jar
Tomcat started.
linux下启动tomcat----Cannot find ./catalina.sh
原文：https://www.cnblogs.com/bichen-01/p/11973426.html