Start of tomcat failed

You should run from the command line / shell if you can though I realize you want to run from Netbeans in this case.

Also make sure that all your .sh scripts are executable (do a chmod) because otherwise they cannot be called.

Lastly, make sure you have the right permissions to run the scripts.

Once you are beyond these checks, you'll possibly get other error messages e.g. your JAVA_HOME or your CATALINA_HOME are not set. These will be easy to fix.

EDIT

To run Tomcat from the terminal,

• go to your Tomcat folder (either TOMCAT_HOME or TOMCAT_HOME/bin).
• Make sure all .sh scripts are executable (chmod a+x *.sh)
• run startup.sh: ./startup.sh or bin/startup.sh (depending on whether you are inside TOMCAT_HOME or inside TOMCAT_HOME/bin)