This file is needed to run this program

今天在linux上部署tomcat 6.0.20,使用sh startup.sh启动tomcat，出现

Cannot find ./catalina.sh    
This file is needed to run this program   
Cannot find ./catalina.sh 
This file is needed to run this program 
然后又使用sh catalina.sh命令执行，结果 
没有设置javahome，然后在catalina.sh里面添加：

JAVA_HOME=/usr/lib/jvm/jdk1.5.0_16;   
          JAVA_HOME=/usr/lib/jvm/jdk1.5.0_16; 
再次执行sh catalina.sh,错误如下：

The BASEDIRenvironmentvariable is not defined correctly    
This environmentvariable is needed to run this program   
    The BASEDIRenvironmentvariable is not defined correctly 
    This environmentvariable is needed to run this program 
经过无数百度后，才发现那些.sh文件都不是可执行文件，于是找到命令：

chmod +x *.sh   
          chmod +x *.sh再次执行 sh catalina.sh通过，然后用sh startup.sh成功启动

#Linux