I understand unix quite well. All the ./pharo does is redirect to the vm with the --nodisplay flag.

When I try it without the "eval "ZnClient new get: 'https://google.com'"" part, I get the following in the terminal:

Usage: [--no-preferences|--preference-file=<FILE>][<subcommand>] [--help] [--copyright] [--version] [--list] [ --no-quit ]
�� --help�� print this help message
�� --copyright� print the copyrights
�� --version�� print the version for the image and the vm
�� --list�� list a description of all active command line handlers
�� --no-quit�� keep the image running without activating any other command line handler
�� <subcommand> a valid subcommand in --list
��
�� Preference File Modification:
�� --preference-file�� load the preferences from the given <FILE>
�� --no-default-preferences�� do not load any preferences from the default locations
��
Documentation:
A PharoCommandLineHandler handles default command line arguments and options.
The PharoCommandLineHandler is activated before all other handlers.
It first checks if another handler is available. If so it will activate the found handler.

Then pharo exits. It seems like it is just doing the command and then dies. That's definitely different behaviour than a usual headless pharo.

Cheers,

Jeff

On Sun, Feb 15, 2015 at 5:39 PM, Sven Van Caekenberghe <sven@stfx.eu> wrote:

Sorry, Jeff, it most certainly works ;-)

./pharo is the headless version
./pharo-ui is the version for running a GUI

these are both bash scripts that use the binary inside pharo-vm
you can look at what's in them to understand what is going on

I don't want to be rude, but either you understand command line unix or you don't. To make things easier, there are the 2 top level scripts. I have no time to explain this from first principles, sorry.

> On 15 Feb 2015, at 23:10, J.F. Rick <self@je77.com> wrote:
>
> This somewhat works. At minimum, the command for downloading the google home page works. On the other hand, the pharo-ui line caused an error: "pharo: could not find any display driver"
>
> That's not a huge deal as this is on a remote server and I can run headless. However, when I try to do that (i.e., ./pharo-vm/pharo headless ./Pharo.image &), I get the same message about not finding a display driver.
>
> I do get both vm-display-X11 and vm-display-null showing up as available drivers.
>
> Cheers,
>
> Jeff
>
> On Sat, Feb 14, 2015 at 2:15 PM, Sven Van Caekenberghe <sven@stfx.eu> wrote:
> Hi,
>
> It seems some people are having trouble getting Pharo to work on Ubuntu 14.04.1 LTS 64-bit.
>
> Here is one way to make things work.
>
> Pharo (the VM) is a 32-bit executable dynamically linked to a number of libraries, each of which has to be present in its 32-bit variant in order to run Pharo and/or to use all features.
>
> On a clean, stock, fully updated Ubuntu 14.04.1 LTS 64-bit, do the following (the X11, GL and asound libraries are not needed when you run headless on a server):
>
> $ sudo apt-get install curl libc6:i386 libssl1.0.0:i386 libX11.6:i386 libGL.1:i386 libasound2:i386
>
> $ curl get.pharo.org/40+vm | bash
>
> $ ./pharo Pharo.image eval "ZnClient new get: 'https://google.com'"
>
> $ ./pharo-ui Pharo.image
>
> HTH,
>
> Sven
>
> PS: <Pro tip> You can use ldd to check if all dependencies of the VM and its plugins in the pharo-vm directory are satisfied
>
> --
> Sven Van Caekenberghe
> Proudly supporting Pharo
> http://pharo.org
> http://association.pharo.org
> http://consortium.pharo.org
>
>
>
>
>
> --
> Jochen "Jeff" Rick, Ph.D.
> http://www.je77.com/
> Skype ID: jochenrick

Jochen "Jeff" Rick, Ph.D.
http://www.je77.com/
Skype ID: jochenrick