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# Tomcat environment variables (2.6)

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By convention, the base Tomcat directory (e.g. `/usr/local/apache-tomcat-5.5.33`) is referred to as `\$CATALINA_HOME`. As a convenience, you should create a `\$CATALINA_HOME` environment variable. For UNIX operating systems one typically modifies a startup file like ~/.bash_login to set and export shell variables while Mac users typically set and export environment variables in `.bash_profile`. For Windows, go to `Start -> Control Panel -> System -> Advanced -> Environment Variables` and set your Tomcat environment variables via the GUI.

Set the `CATALINA_HOME` environment variable to point to the base directory of your Tomcat installation and add the Tomcat `/bin` directory to your `PATH` variable:

Variable

Unix/Mac

Windows

CATALINA_HOME

`export CATALINA_HOME=/opt/tomcat`

`CATALINA_HOME=C:\tomcat`

PATH

`export PATH=\$PATH:\$CATALINA_HOME/bin`

`;C:\tomcat\bin`

Windows: append string to the end of the `Path` system variable.

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