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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


-b, --buildonly
process and compile the script without executing it
-c, --nocache
force the script compilation (do not check cache)
execute the source code provided by the command line ( ':' separator )
-f, --fast
use just-in-time compiler TP -g, --debug add debugging information to application
-h, --help
display help and exit
-L, --license
display license
-S --strict
fail if 'Public' or 'Sub' are defined without a 'main' function otherwise create main()
-t, --trace
turn on tracing option during execution
-T, --terse
only print a very terse error report on compile errors
-u, --use
load component or libraries ('comp1,comp2,lib1...')
-v, --verbose
be verbose
-V, --version
display version
-w, --warnings
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 orginating 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