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• Ubuntu 11.10 is falling back to Unity 2D. How to get back to Unity 3D?

  - by marcioAlmada

  It happened some minutes ago when I plugged my secondary monitor and my graphical interface simply crashed. So I had to restart my session. Since the crash Ubuntu insists to use Unity2D fall back instead of the default one. I used to plug the secondary monitor everyday when at home and nothing bad happened before. This 2D version of the GUI is ugly and has a lot of problems. How can I go back to Unity 3D GUI? update It seems somehow I lost my opengl support (driver issues). $ glxinfo name of display: :0.0 Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Error: couldn't find RGB GLX visual or fbconfig Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". Xlib: extension "GLX" missing on display ":0.0". And: $ glxgears Xlib: extension "GLX" missing on display ":0.0". Error: couldn't get an RGB, Double-buffered visual How can I revert things and go back to the right driver?

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• Starting with text based MUD/MUCK game

  - by Scott Ivie

  I’ve had this idea for a video game in my head for a long time but I’ve never had the knowledge or time to get it done. I still don’t really, but I am willing to dedicate a chunk of my time to this before it’s too late. Recently I started studying Lua script for a program called “MUSH Client” which works for MU* telnet style text games. I want to use the GUI capabilities of Mush Client with a MU* server to create a basic game but here is my dilemma. I figured this could be a suitable starting place for me. BUT… Because I’m not very programmer savvy yet, I don’t know how to download/install/use the MU* server software. I was originally considering Protomuck because a few of the MU*s I were more impressed with began there. http://www.protomuck.org/ I downloaded it, but I guess I'm too used to GUI style programs so I'm having great difficulty figuring out what to do next. Does anyone have any suggestions? Does anyone even know what I'm talking about? heh..

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• Application toolkits like QT versus traditional game/multimedia libraries like SFML

  - by Aaron

  I currently intend to use SFML for my next game project. I'll need a substantial GUI though (RPG/strategy-type) so I'll either have to implement my own or try to find an appropriate third party library, which seem to boil down to CEGUI, libRocket, and GWEN. At the same time, I do not anticipate doing that many advanced graphical effects. My game will be 2D and primarily sprite-based with some sprite animations. I've recently discovered that QT applications can have their appearance styled so that they don't have to look like plain OS apps. Given that, I am beginning to consider QT a valid alternative to SFML. I wouldn't have to implement the GUI functionality I'd need, and I may not be taking advantage of SFML's lower-level access anyway. The only drawbacks I can think of immediately are the learning curve for QT and figuring out how to fit game logic inside such a framework after getting used to the input/update/render loop of traditional game libraries. When would an application toolkit like QT be more appropriate for a game than a traditional game or multimedia library like SFML?

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• Missing launcher after 12.04 upgrade

  - by Preston Zacharias

  I recently upgraded to ubuntu 12.04 and after doing some updates and such my application launcher and title bars (for window dialogues) are missing. Basically the entire unity GUI is missing! Not sure what happened so I installed gnome 3 and it was missing a launcher too, but did have title bars. In addition the bar found at the top that lets you know what's open and allows gnome extensions to be displayed is not interactive. I can't click, right click, alt + click (right or left), alt + super click (right or left) anywhere! I even installed an application menu from the gnome site and it is not interactive either. However, since there is no way to launch applications i have to use terminal and if i minimize an app it will disappear completely. Then i decided to try unity 2D and it is incredibly messed up. Black background, launcher is there but icons and top bar while on desktop are completely distorted. They're not just pixalated; they're all sorts of funky colors and when i open something from unity 2d launcher it will show it's opened in the launcher but nothing appears on my screen. When trying to view videos on youtube the video is distorted and looks just as unity 2d does. Strange enough: the audio works fine, just not videos. Pictures loads, but not ads that stream video. Any suggestions to get my launcher and the unity GUI back? I tried reinstalling gnome, unity 3d, and unity 2d from terminal. no change. also reinstalled unity desktop and tried resetting it: nothing happened.

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• Ubuntu 12.04 Full Screen without Unity Hub

  - by Xatolos

  I couldn't find an answer for this, so I thought I would try here. My problem is, I have some games on Wine that play in full screen mode but I can't really get them in full screen mode. When they start up, they end up with the GUI's "HUD" overlapping the game which is really annoying and well kills the option to play the game. This has also happened in a few of my Linux programs as well. While I wrote its a problem with Unity, it really isn't limited to this though. I've done full screen mode on Unity and had the Unity side bar and top menu overlap, I've used Gnome and had the same issue happen, Gnome menu is in the top, Cinnamon had the same issue. Sometimes if I Alt-Tab out of it and back into the program it MIGHT remove the HUD but that doesn't always work, and lets face it, full screen mode that is killed by the GUI just isn't something that can really be ignored. Any suggestions or help would be highly welcomed. My laptop http://www.cnet.com/laptops/asus-g53jw-a1-15/4507-3121_7-34210244.html edit Seems so far to be an issue with Unity and Gnome being in 3D mode, and possibly an issue with my NVidia card and XServe (I think that was it...). Going to Unity/Gnome 2d modes seem to help with this for the moment...

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• Scala - learning by doing

  - by wrecked

  coming from the PHP-framework symfony (with Apache/MySQL) I would like to dive into the Scala programming language. I already followed a few tutorials and had a look at Lift and Play. Java isn't a stranger to me either. However the past showed that it's easiest to learn things by just doing them. Currently we have a little - mostly ajax-driven - application build on symfony at my company. My idea is to just build a little project similar to this one which might gets into production in the future. The app should feature: High scalability and performance a backend-server web-interface and a GUI-client There are plenty of questions arising when I think of this. First of all: Whats the best way to accomplish a easy to maintain, structured base for it? Would it be best to establish a socket based communication between pure-scala server/client and accessing that data via Lift or is building a Lift-app serving as a server and connecting the gui-client (via REST?) the better way? Furthermore I wounder which database to choose. I'm familiar with (My)SQL but feel like a fool beeing confronted with all these things like NoSQL, MongoDB and more. Thanks in advance!

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• Should I be worrying about limiting the number of textures in my game?

  - by Donutz

  I am working on a GUI in XNA 4.0 at the moment. (Before you point out that there are many GUIs already in existance, this is as much a learning exercise as a practical project). As you may know, controls and dialogs in Windows actually consist of a number of system-level windows. For instance, a dialog box may consist of a window for the whole dialog, a child window for the client area, another window (barely showing) for the frame, and so on. This makes detecting mouse hits and doing clipping relatively easy. I'd like to design my XNA GUI along the same lines, but using overlapping Textures instead of windows obviously. My question (yes, there's actually a question in this drivel) is: am I at risk of adversely affecting game performance and/or running low in resources if I get too nuts with the creating of many small textures? I haven't been able to find much information on how resource-tight the XNA environment actually is. I grew up in the days of 64K ram so I'm used to obsessing about resources and optimization. Anyway, any feedback appreciated.

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• C# Gui setting control.Enabled to false fires OnClick event???

  - by Daniel

  For some really weird reason when i set the .Enabled property to false on a simple text box on a small GUI, it fires a radio buttons OnClick event and its causing lots of problems. I have breakpointed the txtBox.Enabled = false; and after stepping over OR into it i jump straight to the OnClick event of the radio button control Here is the call stack as that happened: TestGUI.exe!TestGUI.frmMain.radiobuttonClicked(object sender = {Text = "Download Single Episode" Checked = true}, System.EventArgs e = {System.EventArgs}) Line 67 C# System.Windows.Forms.dll!System.Windows.Forms.Control.OnClick(System.EventArgs e) + 0x70 bytes System.Windows.Forms.dll!System.Windows.Forms.RadioButton.OnClick(System.EventArgs e) + 0x27 bytes System.Windows.Forms.dll!System.Windows.Forms.RadioButton.OnEnter(System.EventArgs e = {System.EventArgs}) + 0x3e bytes System.Windows.Forms.dll!System.Windows.Forms.Control.NotifyEnter() + 0x20 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.UpdateFocusedControl() + 0x195 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.AssignActiveControlInternal(System.Windows.Forms.Control value = {Text = "Download Single Episode" Checked = true}) + 0x54 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.ActivateControlInternal(System.Windows.Forms.Control control, bool originator = false) + 0x76 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.SetActiveControlInternal(System.Windows.Forms.Control value = {Text = "Download Single Episode" Checked = true}) + 0x73 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.SetActiveControl(System.Windows.Forms.Control ctl) + 0x33 bytes System.Windows.Forms.dll!System.Windows.Forms.ContainerControl.ActiveControl.set(System.Windows.Forms.Control value) + 0x5 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.Select(bool directed, bool forward) + 0x1b bytes System.Windows.Forms.dll!System.Windows.Forms.Control.SelectNextControl(System.Windows.Forms.Control ctl, bool forward, bool tabStopOnly, bool nested, bool wrap) + 0x7b bytes System.Windows.Forms.dll!System.Windows.Forms.Control.SelectNextControlInternal(System.Windows.Forms.Control ctl, bool forward, bool tabStopOnly, bool nested, bool wrap) + 0x4a bytes System.Windows.Forms.dll!System.Windows.Forms.Control.SelectNextIfFocused() + 0x61 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.Enabled.set(bool value) + 0x42 bytes What the hell? It wouldn't have anything to do with the way i subscribe to the events would it? this.radioBtnMultipleDownload.Click += radiobuttonClicked; this.radioBtnSingleDownload.Click += radiobuttonClicked; this.radioCustomUrl.Click += radiobuttonClicked;

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• What are some choices to port existing Windows GUI app written in C to Linux?

  - by Warner Young

  I've been tasked with porting an existing Windows GUI app to Linux. Ideally, I'd like to do this so the same code base can be used to build either the Windows version or the Linux version. I'll be doing my work on Ubuntu 9.04. After searching around, it's unclear to me what tools are best suited to help me with this. A list of loose requirements would be: The code is in C, not C++, and should compile to build both Windows and Linux versions. Since it's existing code, and fairly large, converting to a managed language like .NET is out of the question for now. I would prefer if I can use the same dialogs in both systems. In Windows, putting up a dialog is pretty simple. You build the dialog in the Resource Editor in Visual Studio, then call DialogBox() API, and handle the event messages. I would really like to find something that can do the equivalent on the Linux side. It would also be nice to have a good IDE similar to Visual Studio. Any helps or hints would be appreciated. Thanks,

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• Which language should I use to program a GUI application?

  - by Roman

  I would like to write a GUI application for management of information (text documents). In more details, it should be similar to the TiddlyWiki. I would like to have there some good visual effects (like nice representation for three structures, which you can rotate, some sound). I also would like to include some communication via Internet (for sharing and collaboration). In should include some features of such applications as a web browser, word processor, Skype. Which programming language should I use? I like the idea of usage of JavaScripts (like TddlyWiki). The good thing about that, is that user should not install anything. They open a file in a browser and it works! The bad thing is that JavaScript cannot communicate via internet with other applications. I think the choice of the programming language, in my case, id conditioned by 2 things: What can be done with this programming language (which restrictions are there). How easy to program. I would like to have "block" which can do a lot of things (rather than to program then and, in this way, to "rediscover a bicycle") ADDED: I would like to make it platform independent.

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• Why is my GUI unresponsive while a SwingWorker thread runs?

  - by Starchy

  Hello, I have a SwingWorker thread with an IOBound task which is totally locking up the interface while it runs. Swapping out the normal workload for a counter loop has the same result. The SwingWorker looks basically like this: public class BackupWorker extends SwingWorker<String, String> { private static String uname = null; private static String pass = null; private static String filename = null; static String status = null; BackupWorker (String uname, String pass, String filename) { this.uname = uname; this.pass = pass; this.filename = filename; } @Override protected String doInBackground() throws Exception { BackupObject bak = newBackupObject(uname,pass,filename); return "Done!"; } } The code that kicks it off lives in a class that extends JFrame: public void actionPerformed(ActionEvent event) { String cmd = event.getActionCommand(); if (BACKUP.equals(cmd)) { SwingUtilities.invokeLater(new Runnable() { public void run() { final StatusFrame statusFrame = new StatusFrame(); statusFrame.setVisible(true); SwingUtilities.invokeLater(new Runnable() { public void run () { statusFrame.beginBackup(uname,pass,filename); } }); } }); } } Here's the interesting part of StatusFrame: public void beginBackup(final String uname, final String pass, final String filename) { worker = new BackupWorker(uname, pass, filename); worker.execute(); try { System.out.println(worker.get()); } catch (InterruptedException e) { e.printStackTrace(); } catch (ExecutionException e) { e.printStackTrace(); } } } So far as I can see, everything "long-running" is handled by the worker, and everything that touches the GUI on the EDT. Have I tangled things up somewhere, or am I expecting too much of SwingWorker?

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• Matlab GUI - How to get the previous value entered from a callback function?

  - by Graham

  Hi, I know that this is probably a simple problem but I am new to Matlab GUI's and basically want to get the old value which used to be stored in the text box to replace the value which has just been entered. E.g. Text box contains a valid string, User enters invalid string, Callback func, validates input and realises new input is an error and reverts to the old previous value. How should this be implemented or done? Atm I am just using the get and set property values. Below is some sample code: function sampledist_Callback(hObject, eventdata, handles) % hObject handle to sampledist (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % Hints: get(hObject,'String') returns contents of sampledist as text % str2double(get(hObject,'String')) returns contents of sampledist as a double input = str2double(get(hObject,'String')); if(input < 0 || input > 500) errordlg('Sampled Dist. must be > 0 and < 500','Sample Dist - Input Error'); set(handles.sampledist,'String',['10']); %<--- I would like this value 10 to be the previous entry! guidata(hObject,handles); else set(handles.sampledist,'String',['',input]); guidata(hObject,handles); end

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• New desktop GUI developer; can choose any platform...

  - by alexantd

  I'm planning a client-server product for a tiny, low-volume, high-cost vertical market. One of the components of the product will be a desktop application, simple to moderate in complexity, for data entry and uploading to a central server from remote PCs and/or Macs via SOAP. The server is a Java web app. Customers will be choosing their platform (Windows or Mac) based on what the client app runs on, so my options are wide-open here. However, I will be developing on a Mac and have a strong allergy to MS-specific technologies (sorry). The app will not need to run on any non-desktop-computer devices and I have total freedom to say it will support X but not Y or Z without any negative consequences (quite the luxury, to be sure). I have a lot of experience in server-side development but very little in desktop GUI stuff, and am evaluating my options on the client - basically what do I want to commit to learning over the next 6+ months. I have server-side Java experience as well as a brief dabble in iPhone development, which went OK. Overall I'm looking for: Ease of learning & development IDE support Healthy surrounding ecosystem (libraries, tools, help, etc.) Quality documentation My options as I see them, in rough order of how I'm currently mentally ranking them: Java Swing Cocoa Java SWT JavaFX Adobe AIR XULRunner Am I leaving anything out?

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• Is using a GUI worse than using bash and other text interface tools?

  - by Glycerine

  As a freelancer, and previous Adobe trainer, I get a look-in at many development workflows and alternate styles of programming and design and therefore quite open to different workflows. But a recent post I had, I needed to use SQL - so I whipped out navicat and wrote a nice join statement. I had sniggering comments and sideways glances when I told the developers I was working with navicat, I preferred a GUI to bash and I prefer Aptana to notepad. I felt a little insulted and under skilled as I didn't want to sit in front of reams of spewing green text. I know and use the tools when required but I prefer more attractive, modern products. Have you guys had this? What do you do to overcome it - apart from using bash and notepad more? How do you subdue a developer who's being arrogant about his skill? And is it my fault? I hope this question is not subjective, I do feel like I am inferior to my peers due to it - so some advise would really help.

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• Should the program logic reside inside the gui object class or be external to the class?

  - by hd112

  I have a question about how to structure code in relation to GUI objects. Suppose I have a dialog that has a list control that has a bunch of names obtained from a database. The user can edit the names. Does the logic reside inside that dialog class or should it be from the outside. To illustrate what I mean, here’s some pseudo code showing the structure of the code when the logic is handled outside the dialog class: NamesDialog : wxDialog { Private: ..stuff.. Public: ... SetNames(wxStringArray names); wxStringArray GetNames(); ..stuff.. } So the user of the class would do something like: wxStringArray names = DatabaseManager::Get()->GetNames(); names.Sort(); NamesDialogObject.SetNames(names); NamesDialogObject.ShowModal(); wxStringArray modified_names = NamesDialogObject.GetNames(); AddToDatabase(modified_names); //or something like this. On the other hand, the database logic can reside inside the NamesDialog class itself. In the show method I can query the database for the names and as the user interacts with the controls (list control in this case), the database can be updated from the event handlers. As a result the NamesDialog class only has the Show() method as there is no need to use SetNames or GetNames() etc. Which method is generally preferred? I don’t have much work experience so I’m not sure which is the proper way to handle it. Sometimes it's easier to handle everything in the class but getting access to objects it interacts with can be challenging. Generally can do it by having the relevant objects be singletons like the database manager in the above example.

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• How do I use requestFocus in a Java JFrame GUI?

  - by JohnWong

  I am given an assignment but I am totally new to Java (I have been programming in C++ and Python for two years). So we are doing GUI and basically we extended JFrame and added a couple fields. Say we have a field named "Text 1" and "Text 2". When user presses enter with the cursor in Text 1, move the focus to Text 2. I tried to add private JTextField textfield1() { textfield1 = new JTextField(); textfield1.setPreferredSize(new Dimension(200, 20)); textfield1.addActionListener( new ActionListener() { public void actionPerformed(ActionEvent e) { textfield1text = textfield1.getText().trim(); textfield1.setText(textfield1text); System.out.println(textfield1text); textfield1.requestFocus(); } }); return textfield1; } But that doesn't work at all. I noticed that requestFocus is not recommended, and instead one should use requestFocusWindows. But I tried that too. Upon some readings it seems like I have to do keyboard action and listener? But my teacher said it only requires 1 line...

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• GUI for Dialog-design for WiX

  - by leiflundgren

  WiX is great in that there is no GUI, you just write the installer you want it to be. No fiddling with GUI-wizards! However, drawing GUI is actually one thing I prefer to use a GUI for. So, is there any Dialog-drawing program which exports WiX-data? (I suppose else-wise perhaps I could transform what Visual Studio's forms editor does to WiX-XML.) /L

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• Installing Gnome Classic on Ubuntu Server 12.04.1 64bit

  - by varunyellina

  I've installed Ubuntu Server Edition and setup open ssh,samba and lamp on my home desktop just to work on LAN. I also want setup a GUI on it for daily use. I've already performed the following sudo apt-get install gnome-session-fallback sudo apt-get install lightdm-gtk-greeter sudo apt-get install xinit I don't want to install Unity or the Gnome3 Shell on my system. Also I haven't found instructions to installing gnome-classic on a server edition(although it shouldn't make a difference).How do I get it to work?

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• SharpDX/D3D: How to implement and draw fonts/text

  - by Dmitrij A

  I am playing with SharpDX (Direct3D for .NET) without using "Toolkit", already finished with basic rendering 3D models. But now i am wondering how to program/create fonts for game (2D), or how to simple draw variable text to output with Direct3D? (it is not as SharpDX question as common Direct3D question, how to start with game GUIs? And what should i do to program simple GUI's like menu for a game (generally i understand that it's shaders).

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• What is a better language to use when building a database: Visual C# or Visual Basic (VB.net)? [on hold]

  - by user3413537

  I'm building a GUI and a database which is using SQL as a server (internal database not a web application). Which language is more of a "right tool" when it comes to building a not very structurally complicated database? What are the advantages and disadvantages of Visual C# / VB.net? I've been reading a lot of stuff online and they said that VB.net is not as capable and it doesn't have as much support as Visual C#, and it seems that VB.net is on a decline in terms of popularity.

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• How are video card\graphics drivers written exactly? [closed]

  - by Bigyellow Bastion

  I was thinking, since I want an application layer for my operating system, how or what would be the best way to write, or better understand how to write, my own graphics device drivers or software to enable application layered software to request data through my graphics system (I.e. windows, icons, mouse pointers). I don't need every little detail, I'd just like some possible insight on the procedure one may accomplish this feat in, perhaps the best way to understand the interaction between the graphics GUI rendering software to the hardware interaction directly, and the application software requesting the graphics driver itself.

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• What is a good Amazon S3 client?

  - by Eyal

  I've been using the Amazon S3 Management console to browse my S3 files. Unfortunately, it doesn't seem to be able to sort files (in a given bucket) by anything other than whatever its default is (which seems to be by name). I'd like a nice GUI client for seeing these files which will let me sort them by date, so the newest will appear on top. I did find a Firefox plug-in - S3Fox - but it doesn't work for the current version of Firefox.

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• Argument list too long and copying to Samba Share

  - by Copy Run Start

  Ubuntu 12.04 LTS 64 bit. I'm trying to make a scheduled task copy from a directory with thousands of files to a samba share (while skipping duplicates). I mapped my Samba share through the GUI. The command I tried: cp /home/security/Brick/* ~/.gvfs/"cam on atm-bak-01.local/Brick" -n I found this but I don't know how to change the syntax to what I need. find -maxdepth 1 -name '*.prj' -exec mv -t ../prjshp {} + Any hints are greatly appreciated.

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• 12.04 How to go back to command line only ubuntu

  - by Ne0

  I was attempting to install a command line only version of Ubuntu and followed the instructions here. I downloaded the alternate CD and went through the installation, but never got an "Install a command-line system." option. 12.04 is now up and running, though i don't need the desktop GUI. From what i have read i can set it back into text mode using grub, but what packages should i remove that i don't need any more?

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• MAMP like tool for ubuntu

  - by hrishikeshp19

  I am from mac os x background. To control my apache, mysql, and php, I used to use MAMP tool available for mac os x. On my ubuntu, I have installed all the required softwares but, I want a good UI tool to control my apache. To be specific, I change my document root too often, so I want a GUI tool to where I can just browse for desired document root, and restart the server. Is there any such tool available?

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