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# Launching on Linux

To launch the application on Linux, do one of the following:

• Double-click the Katana icon on the Desktop.

• Open the Katana application directory (by default, /usr/local/Katana 9.0v3) and double-click the Katana icon.

• Using a terminal, navigate to the Katana application directory and enter:

./katana

If you already have a valid license, the graphical interface appears. If you don't have a license or haven't installed one yet, proceed to Licensing Katana on Linux.

You can also specify a Katana scene to load when Katana is launched. To do this:

| 1. | Open a terminal.

| 2. | Navigate to the directory where you installed Katana.

| 3. | Enter:

./katana /yourDirectory/yourScene.katana

There are a number of different modes for launching Katana:

• Interactive mode is the default mode. It requires no additional command-line arguments, and is the only launch mode that starts Katana with the GUI.

• Batch mode opens a Katana scene for render farm rendering.

• Shell mode exposes Katana’s Python interpreter in the terminal shell.

• Script mode runs a specified Python script in Katana’s Python interpreter.

• Profiling mode runs Katana with a special version of the Geolib3 Runtime that implements profiling.

In addition to the different modes, you can also set startup scripts to run on open in files named init.py, located in a Startup folder, under the path defined in the KATANA_RESOURCES environment variable. Alternatively, you can use a startup script in the form of an init.py file placed in the .katana folder in your HOME directory. These startup scripts can be run regardless of the launch mode you choose.

For information on starting Katana in the other launch modes, see Command-line Interface.