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gbs3(1) User Commands gbs3(1)


gbs3 - GAMBAS Scripter


gbs3 [options] [--] [<script file> | -]
gbs3 --convert-project <source project directory> <destination script directory>


Gambas is a free development environment based on a Basic interpreter with object extensions,
a mix of Java(tm) and Visual Basic(tm).
With Gambas, you can quickly design your program GUI, access MySQL or PostgreSQL databases,
pilot KDE applications with DCOP, translate your program into many languages, and so on...

gbs3 is the interpreter that allows you to compile and execute a Gambas script.
gbs3 may also be used to convert a gambas project to a script


process and compile the script without executing it
force the script compilation (do not check cache)
execute the source code provided by the command line ( ':' separator )
use just-in-time compiler TP -g, --debug add debugging information to application
display help and exit
display license
fail if 'Public' or 'Sub' are defined without a 'main' function otherwise create main()
turn on tracing option during execution
only print a very terse error report on compile errors
load component or libraries ('comp1,comp2,lib1...')
be verbose
display version
display warnings during compilation
convert a simple project to a script


gbs3 can convert a gambas project to an executable script file using the --convert-project option.
The input project directory is used to createthe script which is written to the output script directory.
The script is created and named the same as the originating project.

gbs3 MyProjectDirectory DestinationScriptDirectory


#!/usr/bin/env gbs3
for i as integer = 0 to 10
print i;;


The latest version of Gambas can always be obtained from, documentation about the language is at


Report bugs to


Copyright© Benoît Minisini <>;

This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

March 2021 Ubuntu