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Installing .Net 3.5 on Windows 10 offline using DVD/ISO media

Installing .Net 3.5 using the Control Panel in Windows 10 (anniversary update) can sometimes be very slow. Alternative option is to install from DVD/ISO, like: c:\>DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:E:\sources\sxs Where: E: is the drive letter of DVD/ISO Reference: https://technet.microsoft.com/en-us/library/dn482069.aspx

BlackBerry Playbook Simulator 2.1 not working after installing on Ubuntu 16.04 64-bit

I was able to install BlackBerry Playbook Simulator 2.1 on Ubuntu 16.04 64-bit by installing supported libraries, see here . Running the IDE ( /opt/bbndk-2.1.0/bbndk.sh ) fails with a message as shown below. /opt/bbndk-2.1.0/host/linux/x86/usr/bin/../..//usr/qde/eclipse/qde: error while loading shared libraries: libgtk-x11-2.0.so.0: cannot open shared object file: No such file or directory The above message says we don't have libgtk-x11-2.0 libraries. Since the IDE was compiled as i386 we need to install the library like: sudo apt install libgtk2.0-0:i386 Running the IDE again yields the following error message: (qde:2418): Gtk-WARNING **: Unable to locate theme engine in module_path: "hcengine", # # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0xf771179d, pid=2418, tid=4131637376 # # JRE version: 6.0_24-b07 # Java VM: Java HotSpot(TM) Client VM (19.1-b02 mixed mode, sharing linux-x86 ) # Problematic frame: # C

Installing BlackBerry Playbook Simulator 2.1 fails on Ubuntu 16.04 64-bit

Tried to install BlackBerry Play Simulator 2.1 on Ubuntu 16.04 64-bit but it fails with error message below. sudo ./installer-bbndk-2.1.0-linux-1032-201209271809-201209280007.bin Preparing to install... Extracting the JRE from the installer archive... Unpacking the JRE... Extracting the installation resources from the installer archive... Configuring the installer for this system's environment... Launching installer... ./installer-bbndk-2.1.0-linux-1032-201209271809-201209280007.bin: 3320: exec: /tmp/install.dir.3056/Linux/resource/jre/bin/java: not found The installation is failing because it has dependencies to 32-bit libraries. To fix it, do: $ sudo dpkg --add-architecture i386 $ sudo apt install libc6:i386 $ sudo ./installer-bbndk-2.1.0-linux-1032-201209271809-201209280007.bin Installation should now complete but the IDE will not be working. Next post details how to fix it. Follow-up post is here .

Installing VMware Workstation Professional VMware Tools in Ubuntu 16.04

It is good practice to get the latest updates before installing VMware Tools. Open terminal and run the following: $ sudo apt update $ sudo apt upgrade $ sudo reboot If the update needs to upgrade the kernel, it is a good idea to reboot the machine before installing the tools so that we are compiling against the correct kernel. From VMware Workstation menu, do VM | Install VMware Tools... . $ mount cdrom $ mkdir ~/tmp $ tar -xvzf /media/u1/VMware\ Tools/VMwareTools-9.9.5-3735633.tar.gz -C ~/tmp $ cd ~/tmp/vmware-tools-distrib/ $ sudo ./vmware-install.pl -d $ eject $ sudo reboot Where: u1 = is the username, replace it with your username VMwareTools-9.9.5-3735633.tar.gz = version of VMware Tools in the ISO, change it with what's in /media/<user>/VMware Tools/ .

How to determine BlackBerry PlayBook Simulator IP address

Click on user icon, a popup dialog will show up and show the IP address.

Windows 10 Task Manager not updating

This is probably my silly mistake but it took me a while to figure out why it is not updating - it was paused!!! Did I do it? Maybe... but could be Windows just deciding to pause it. Anyway, un-pause it like as shown below. Reference: http://www.tenforums.com/performance-maintenance/31047-task-manager-not-updating.html

How to remove floppy icon in Ubuntu 16.04 running on VMware Workstation 11

Even when the floppy hardware is removed from the VM configuration of a Ubuntu guest under VMware Workstation 11, the icon for floppy disk drive still shows up in the Launcher . To fix this  you need to disable Legacy Diskette A in the virtual BIOS of the guest. An easy way to boot to the virtual BIOS is to shutdown the VM, then select VM | Power | Power On to Firmware . Then change Legacy Diskette A: to [Disabled], F10  to save and exit. This should reboot the machine. References: https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1004129 https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1034616 https://communities.vmware.com/thread/449235?start=0&tstart=0

What is 169.254.x.x IPv4 address?

169.254.x.x is a link-local IP address that gets assigned automatically when, generally, DHCP is not available. On Windows operating system, this is called APIPA (Automatic Private IP Addressing). RFC 3927 defines the 169.254.0.0/16 address block for use in the link-local assignments. Note that routers are not supposed to route traffic from this address block. Reference: https://en.wikipedia.org/wiki/Link-local_address

BlackBerry Tablet Simulator Mouse Gestures

Mouse Gestures for BlackBerry Tablet Simulator Description Mouse Show top bar (notification area) Move mouse top middle and click Show Browser options Move mouse top right and click Show applications running Move mouse bottom middle and click Show application home screen (aka desktop) Move mouse bottom middle and click twice Show on screen keyboard Move mouse to lower left and click https://developer.blackberry.com/develop/simulator/simulator_gestures.html

BlackBerry Tablet Simulator shows black screen

On Windows 10 Enterprise version 1511 build 10586.589 + VMware Workstation 11.1.4, powering up a BlackBerry PlayBook Simulator 2.1 shows blank/black screen. The simulator was created around September 2012, it may have worked back in the day but with latest versions of the host OS and VMware it is not working using default configuration. The link from here mentions about supported graphics card, thus say, should support OpenGL 2.0. I am using a machine that supports Open GL 4.1 and still not working. To have a partially working simulator, change QNX boot option to 2. You can play with the simulator but developing an application that needs EGL does not work. Reference: https://developer.blackberry.com/develop/simulator/simulator_installing.html Hints/Keywords: Blank screen Black screen BlackBerry Table Simulator Not working on VMware Workstation

Installing BlackBerry Tablet Simulator 2.1 fails with "Windows error 2 occured while loading the Java VM"

Installing BlackBerry Tablet Simulator 2.1 on Windows 10 fails with the error message as shown below. --------------------------- LaunchAnywhere Error --------------------------- Windows error 2 occured while loading the Java VM --------------------------- OK --------------------------- To fix this install x86 version of JRE (tested with jre-8u102-windows-i586.exe). Running the installer again will still fail. Workaround is to pass command line argument to the installer, like: BlackBerryPlayBookSimulator-Installer-2.1.0-1032-Win-201209272349 LAX_VM "C:\Program Files (x86)\Java\jre1.8.0_102\bin\java.exe" -i GUI Run the above command on elevated prompt. Tested on Windows 10 1511 (OS Build 10586.545) Reference: https://supportforums.blackberry.com/t5/Adobe-AIR-Development/Window-error-2-occurred-when-loading-java-vm/td-p/1300033

Add a regular user in Kali Linux

Create a new user, say timus . # adduser timus Add user to sudoers group. This enables the user to become root when needed, for example to install new software. # usermod -a -G sudo timus References: http://8thstring.blogspot.com/2013/07/howto-create-new-user-in-lubuntu.html http://8thstring.blogspot.com/2012/12/adding-existing-user-to-group-in-ubuntu.html

Install Linux headers in Kali

In Kali Linux 2016.2, Linux headers were not installed when build-essential package was installed. Linux-headers is need when installing VirtualBox guest additions. To install the headers, do: # apt install linux-headers-$(uname -r) This should apply to the following distribution as well: - Debian - Ubuntu and derivatives Reference(s): http://askubuntu.com/questions/75709/how-do-i-install-kernel-header-files

OS X Keyboard Shortcuts

Key Action Notes ⌘+⇧+4 Screen capture of user defined screen Saves the screenshot on the Desktop Document Shortcuts Fn+Left Arrow Home: Scroll to the beginning of a document. Fn+Right Arrow End: Scroll to the end of a document. Fn+Up Arrow Page Up: Scroll up one page. Fn+Down Arrow Page Down: Scroll down one page. mc - Midnight Commander Esc+c Quick cd (M-c) Change directory Esc+s Search/Go to directory Legends ⌘ Command ⌥ Option ⇧ Shift ⌃ Control https://support.apple.com/en-us/HT201236 http://www.osxkeyboardshortcuts.com/keyboard-symbols.html Under construction. References: https://gist.github.com/sgergely/3793166

How to view Console.WriteLine output in Xamarin Studio UI Test

To view Console.Write/Console.WriteLine output from within Xamarin Studio UI Test, do: If Unit Test pad/window is not visible, using App menu, do View | Pads | Unit Tests .  On a test that passed (e.g., ), select test and right click, then select Show results pad  ( )

Resize OS X El Capitan HD to full size

Got OS X El Capitan running inside VMware Fusion 8. The default drive size is around 40GB and I wanted to change it to 120GB. Disk Utility seems like the tool to do the job but is not working properly. To resize, do: $ sudo disktuil resizeVolume / R Reference(s):  https://themacwrangler.wordpress.com/2015/10/21/resizing-el-capitan-mac-volumes-under-vmware-fusion/

The Maximum Log Size specified is not valid when changing Windows Event Viewer log size

When changing Application Windows Event Log maximum size and you are seeing the message below then it is possible that it is set by group policy (local or Active Directory). --------------------------- Event Viewer --------------------------- The Maximum Log Size specified is not valid. It is too large or too small. The Maximum Log Size will be set to the following:  1028 KB --------------------------- OK   --------------------------- This behavior can be modified allow changes via Windows Event View application. To do so open Group Policy Editor (gpedit.msc). Then navigate to  Computer Configuration | Administrative Templates | Windows Components | Event Log Service | Application  (for example) then change Maximum Log Size (KB) to Not configured . Note that you need to be an administrator to make the changes.

Running Python one liner

Running on liner Python is sometimes just fells awesome, practice with caution though. Below spits out uuid4 using Python one liner. c:\> ipy -c "import uuid; print(uuid.uuid4())" Reference(s): http://stackoverflow.com/questions/2043453/executing-python-multi-line-statements-in-the-one-line-command-line

Enable ClearType using Python

When I remote desktop to Windows machines most of the time the fonts just looks ugly. This can be improved by enabling ClearType and I do this every time I connect to a box which I do several times a day. Below is a Python code that enables ClearType which I shamelessly copied from StackOverflow. Reference(s): http://stackoverflow.com/questions/5676768/enable-disable-cleartype-in-windows7

OpenSUSE Tumbleweed does not boot to GUI after upgrade

OpenSUSE Tumbleweed kernel update as of 3/31/2016 does not boot to the UI anymore. This was observed on VirtualBox 5.0.16. Workaround is to pass iomem=relaxed to the kernel, see below for details. Reboot the machine. During the boot-up press  e at the screen below. Look for the line with linux  and add iomem=relaxed Reference: https://forums.opensuse.org/showthread.php/514436-X-server-not-starting-after-update

Howto: Installing pywin32 on Python 3.5.1 64-bit

Installing Python for Windows Extensions on Python 3.5.1 64-bit C:\>pip install pypiwin32 If you are getting the following error message in importing win32gui install VC++ 2010 redistributable. >>> import win32gui Traceback (most recent call last):   File "<stdin>", line 1, in <module> ImportError: DLL load failed: The specified module could not be found. Reference(s): http://sourceforge.net/projects/pywin32/ https://www.python.org/downloads/

Install minimalist GUI on top of Debian Stretch netinstall

LXDE is pretty lightweight desktop environment. There are other lighter weight DEs out there mind you but for most practical purposes LXDE serves most of the modern x86 machines. To install minimalist (just the core) LXDE on Debian Strech, do: #: apt-get install lxde-core lightdm Note: This will also install a lighter version desktop manager LightDM This is a pre-release version, it may change without notice.

Allow changes to SQL Server table schema if the changes require table re-creation

Modifying an  SQL Server table that requires the table to be re-created is not allowed by default using SQL Server Management Studio for good reason. For example, changing a column of type nvarchar from 10 to 20 will result with the following error: Saving changes is not permitted. The changes you have made require the following tables to be dropped and re-created. You have either made changes to a table that can't be re-created or enabled the option Prevent saving changes that require the table to be re-created. To allow schema change for the above situation using SSMS, do the following: Open SSMS (SQL Server Management Studio). I am using SSMS 2014.  For good measure, back-up the database. Navigate to Tools | Options .  Click on Designers . Remove the check box on Prevent saving changes that require table re-creation .  Click on OK .  Proceed with changing the table schema. Again for good measure, enable Prevent saving changes that require table re-crea

How to determine Hyper-V hostname inside the guest VM

On Hyper-V virtual machine with integration services installed the host machine can be identified by reading HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Virtual Machine\Guest\Parameters\Hostname on the guest machine itself. Reference(s): http://social.technet.microsoft.com/wiki/contents/articles/219.hyper-v-how-to-find-the-host-of-a-vm.aspx

Enable logging of .Net assembly binding via registry

You have a .Net application that fails to load and you are suspecting that it may have to do with assembly dependencies. On a development machine fuslogvw.exe will aid you in collecting failed assembly binding but fuslogvw.exe is not normally available on production environment. So what do you do? Logging of assembly binding can be enabled via the Registry, to do so navigate to HKLM\Software\Microsoft\Fusion . Add the following keys with corresponding values: Key Type Value ForceLog DWORD 1 LogFailures DWORD 1 LogResourceBinds DWORD 1 LogPath String C:\FusionLog\ You need to restart the .Net application under test for this to take effect. The log files will be saved in C:\FusionLog . Reference(s): http://stackoverflow.com/questions/1012252/using-fuslogvw-exe-on-a-machine-with-no-visual-studio-installed

How to install Squeak 5.0 on Ubuntu 15.10 64-bit

Squeak 5.0 stable as of this writing (3/21/2016) only supports 32-bit on Linux. To get this to work on 64-bit install follow the instructions below. Download Squeak 5.0 from http://squeak.org/ Extract to location, e.g., ~/apps/ Open a console $: cd ~/Downloads $: unzip Squeak-5.0-All-in-One.zip -d ~/apps/ Get 32-bit libraries Use the Squeak built-in script to get most (not all is installed) $: cd ~/apps/Squeak-5.0-All-in-One $: Squeak-5.0-All-in-One.app/Contents/LinuxAndWindows/install-libs32 This will fail with the error message below (at least on Ubuntu 15.10) Fail with the following error message: E: Unable to locate package lib32bz2-1.0 E: Couldn't find any package by regex 'lib32bz2-1.0' E: Unable to locate package libgl1-mesa-dri-lts-utopic E: Unable to locate package libgl1-mesa-glx-lts-utopic Let us fix this by running command below: $: sudo dpkg --add-architecture i386 $: sudo apt-get update $: sudo apt install lib32z1 $: sudo apt in

View library dependencies in Linux

I was trying to get Squeak VM 5.0 running on Ubuntu 16.04 beta 1 and got the following: /home/timus/Downloads/Squeak-5.0-All-in-One/Squeak-5.0-All-in-One.app/Contents/LinuxAndWindows/Linux-i686/bin/squeak could not find display driver vm-display-X11; either:   - check that /home/timus/Downloads/Squeak-5.0-All-in-One/Squeak-5.0-All-in-One.app/Contents/LinuxAndWindows/Linux-i686/lib/squeak/5.0-3397//vm-display-X11.so exists, or   - use the '-plugins <path>' option to tell me where it is, or   - remove DISPLAY from your environment. ./squeak.sh: line 1:  8289 Aborted                 (core dumped) ./Squeak-5.0-All-in-One.app/Contents/LinuxAndWindows/squeak.sh To view library dependencies in Linux, do: $: ldd Squeak-5.0-All-in-One.app/Contents/LinuxAndWindows/Linux-i686/lib/squeak/5.0-3397/vm-display-X11 This should display library dependencies of vm-display-X11.

Hyper-V enhanced session mode supported guest OS

Enhanced session mode in Hyper-V allows redirection of local devices and resources from computers running virtual machine connection. This is very convenient functionality as it allows the same level of interaction as remote desktop connection. In fact, it seems like it is a modified version of RDP from the way it works. To use it you need to have host OS running Windows Server 2012 R2 or Windows 8.1 Enterprise or later. The guest OS has to be Windows Server 2012 R2 or Windows 8.1 Pro or later.

Show a temporary window in SikuliX

I can't find documentation in SikuliX to show a window or dialog and hide/close it after configured time. Since SikuliX uses Jython behind the scenes and Jython can access Java easily then showing a simple Swing window should be straightforward. Sample code below demonstrates Alternative solution as proposed by Raiman Reference(s): Github https://github.com/haru-a8n/CodeSamples/blob/master/sikulix/ShowMessage.sikuli/ShowMessage.py Jython GUI Sample applications http://www.jython.org/jythonbook/en/1.0/GUIApplications.html Swing Sample applications in Jython https://wiki.python.org/jython/SwingExamples

Eclipse configuration

Oxygen.2 (v4.7.2): Base: Eclipse Platform Binary( link ) Tfs Integration: Team Explorer Everywhere ( link ) Python Editor: PyDev System Integration: StartExplorer( link )  Location: http://basti1302.github.com/startexplorer/update/ Subversion Integration: Subclipse Web Development: Eclipse Web Developer Tools XML Editor: Eclipse XML Editors and Tools Neon (v4.6.x): Base: Eclipse Platform ( link ) Tfs Integration: Team Explorer Everywhere ( link ) Python Editor: PyDev System Integration: StartExplorer( link )  Location: http://basti1302.github.com/startexplorer/update/ Subversion Integration: Subclipse Web Development: Eclipse Web Developer Tools XML Editor: Eclipse XML Editors and Tools Mars.1(v4.5.x): Base: Eclipse Classic Python Editor: PyDev System Integration: StartExplorer( link )  Location: http://basti1302.github.com/startexplorer/update/ Subversion Integration: Subclipse Tfs Integration: Web Development: Eclipse Web Developer Tools XML Editor: Ecli

Assign keyboard shortcut to lxterminal on LXDE

On my Debian 8.2 LXDE minimal install, need to assign keyboard shortcut to open lxterminal. To assign keyboard binding in LXDE, open  ~/.config/openbox/lxde-rc.xml  then add the following inside <keyboard>  element: Then run the following to for OpenBox/LXDE to reload the configuration. $: openbox --reconfigure Reference(s): http://superuser.com/questions/807047/how-to-add-a-shortcut-key-to-the-terminal-in-lxde

The type or namespace name `Gtk' could not be found. Are you missing an assembly reference?

After fixing items below related to MonoDevelop on Linux Mint 7.3, another error shows up: http://8thstring.blogspot.com/2016/01/monodevelop-does-not-start-on-linux.html http://8thstring.blogspot.com/2016/01/could-not-obtain-c-compiler-c-compiler.html The type or namespace name `Gtk' could not be found. Are you missing an assembly reference? To fix install gtk-sharp-2.0 libraries, like: $: sudo apt-get install gtk-sharp2

Could not obtain a C# compiler. C# compiler not found for Mono / .Net 4.0

Tried to build a monodevelop project in Linux Mint 17.3 but got the following error message Could not obtain a C# compiler. C# compiler not found for Mono / .Net 4.0 To fix this do: $: sudo apt-get install mono-gmcs Reference(s): http://stackoverflow.com/questions/8022653/c-sharp-compiler-not-found-when-building-a-package-monodevelop-linux