====== Command line options ======

This section describes the available command line options for GCstar.


===== Introduction =====

GCstar is launched through the main program, **gcstar**. When launched without any argument, it will open the graphical user interface and will load the previously opened file. After the application name, you should use a file name. Then GCstar will start and open it.

<terminal>gcstar collection.gcs</terminal>

There also other available operations that are triggered through a particular option. They are explained in next sections. You may also launch GCstar with **--help** option to display a summary of the available options.

<terminal>gcstar --help</terminal>

===== Update =====

If the **-u** or **--update** option is present, GCstar will run in update mode. This is more detailed in [[Update]].


===== Command line execution =====

If the **-x** or **--execute** option is present, GCstar will run in non-interactive mode. This mode could be used to do some tasks without using the graphical interface. There are more details in [[Execution]].