Convert Virtualbox vdi to VMware vmdk Files

QEMU-IMG can be used to convert virtualbox vdi file to vmware vmdk file

qemu-img.exe convert -O vmdk virtualbox.vdi vmware.vmdk

demo code for wx.TaskBarIcon

Below is the demo code for wx.TaskBarIcon,

import wx
class sysTrayDemo(wx.Frame):
    def __init__(self, parent, id, title):
        pass
        wx.Frame.__init__(self, parent, -1, title, size = (800, 600),
                         style=wx.DEFAULT_FRAME_STYLE|wx.NO_FULL_REPAINT_ON_RESIZE)
        # FIXME: substitute your icon file here.
        icon = wx.Icon('systray.ico', wx.BITMAP_TYPE_ICO)
        self.SetIcon(icon)
        if wx.Platform == '__WXMSW__':
            # setup a taskbar icon, and catch some events from it
            self.tbicon = wx.TaskBarIcon()
            self.tbicon.SetIcon(icon, "SysTray Demo")
            wx.EVT_TASKBAR_LEFT_DCLICK(self.tbicon, self.OnTaskBarActivate)
            wx.EVT_TASKBAR_RIGHT_UP(self.tbicon, self.OnTaskBarMenu)
            wx.EVT_MENU(self.tbicon, self.TBMENU_RESTORE, self.OnTaskBarActivate)
            wx.EVT_MENU(self.tbicon, self.TBMENU_CLOSE, self.OnTaskBarClose)
        wx.EVT_ICONIZE(self, self.OnIconify)
        return
    def OnIconify(self, evt):
        self.Hide()
        return
    def OnTaskBarActivate(self, evt):
        if self.IsIconized():
            self.Iconize(False)
        if not self.IsShown():
            self.Show(True)
        self.Raise()
        return
    def OnCloseWindow(self, event):
        if hasattr(self, "tbicon"):
            del self.tbicon
        self.Destroy()
    TBMENU_RESTORE = 1000
    TBMENU_CLOSE   = 1001
    def OnTaskBarMenu(self, evt):
        menu = wx.Menu()
        menu.Append(self.TBMENU_RESTORE, "Restore SysTray Demo")
        menu.Append(self.TBMENU_CLOSE,   "Close")
        self.tbicon.PopupMenu(menu)
        menu.Destroy()
    #---------------------------------------------
    def OnTaskBarClose(self, evt):
        self.Close()
        # because of the way wx.TaskBarIcon.PopupMenu is implemented we have to
        # prod the main idle handler a bit to get the window to actually close
        wx.GetApp().ProcessIdle()
class MyApp(wx.App):
    def OnInit(self):
        self.redirect=True
        frame = sysTrayDemo(None, -1, "SysTray Demo")
        frame.Show(True)
        return True
def main():
    app = MyApp()
    app.MainLoop()
if __name__ == '__main__':
    main()

TIPS: Linux : Compress a directory

The following command can be used to compress entire directory in a file :

tar cjf <FileName>.tar.bz2 <DirectoryPath>

Tips: Convert flv to mpg or avi

Following converts video.flv into video.mpg file:

CODE

ffmpeg -i video.flv -ab 56 -ar 22050 -b 500 -s 320x240 video.mpg


and following converts  video.flv into video.AVI with MP3 Audio:

CODE

ffmpeg -i I_test.flv -ab 56 -ar 22050 -b 500 -s 320x240 -vcodec xvid -acodec mp3 video.avi

TIPS: DELTREE in Windows XP

deltree can be simulated using the following .cmd file:

1. Create an empty file deltree.cmd in %windir%\system32 folder
2. Add the following content to the file, and save the file.

@echo off
del /S /F /Q %1
rd /S /Q %1

Switching back to Linux when Gnome-RDP in full screen

Ctrl+Alt+Enter will return you from full-screen mode.

You can use the same set of keystrokes to enter into the full-screen mode.

checking ext3 filesystem using fsck

use the following command for checking ext3 filesystem using fsck

fsck -c <drive>

<drive>: path of drive which you like to get scanned,

NOTE: IT Is aways advice to unmount the partition which needs to be scanned.

Disable “Use the web service to find the appropriate program”

Create the following DWORD key NoInternetOpenWith = 1 at

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer

Tips: Linux: Mount NTFS Share

 

mount -t cifs //<IPAddressOfRemoteMachine>/<Share> -o username=myntaccount,password=mypassword /mnt/ntfs

FAQ: App-V: How to use the custom Exclusion List while Sequencing

Steps to create the custom exclusion list.

1. Launch the AppV sequencer.
2. Goto Tools -> Options
3. Select “Exclusion Items” tab
4. Add new exclusion items using “New Button”
5. When all the exclusion items are added then press “Save As Default” button
6. Copy the default.sprj file from “C:\Program Files\Microsoft Application Virtualization Sequencer\” or the folder where the sequencer was installed to some network share from where it can be accessed later.

Using the custom exclusion list

1. Copy the saved default.sprj file to “C:\Program Files\Microsoft Application Virtualization Sequencer\” before launching the Sequencer.
2. When launched the sequencer will take the exclusion list from the default.sft file.

Imaging WinXP using Knoppix

1. Boot from knoppix
2. Repartition your drive
   1. Base Partition – This is were your winXP is installed
   2. Image Partition – this is were your image of windows xp will be copied
3. mount the  image partition: mount /dev/sda2 /media/img
4. Use the command to create the img: ntfsclone -s -o /media/img/winxp.img /dev/sda1
5. use the command to restore the img: ntfsclone  –restore-image -O /dev/sda1  /media/img/winxp.img
6. Enjoy

Note: It is a good idea to have ext3 as filesystem for your image partition so that the image file is not deleted accidentally and also it overwrites the FAT32 2GB filesize limit.

TIPS: dbus: UUID file ‘/var/lib/dbus/machine-id’ contains invalid hex data

Whenever you get the above error then it can be resolved by executing the following command

dbus-uuidgen > /var/lib/dbus/machine-id

TIPS: dpkg Error: dpkg: too many errors, stopping

apt-get and dpkg are great package management tools but there might be a time that you can face the following error:

dpkg: too many errors, stopping

also when you try `apt-get upgrade` or `apt-get dist-upgrade` you will be adviced that the previous application installation was not successful thus they should execute `dpkg –configure -a` and it returns the above error.

To resolve the issue run the following command

dpkg --configure -a --abort-after=99999

MAC OS Keys

Startup
Keystroke Description
Press X during startup Force Mac OS X startup
Press Option-Command-Shift-Delete
during startup Bypass primary startup volume and seek a different startup volume (such as a CD or external disk)
Press C during startup Start up from a CD that has a system folder
Press N during startup Attempt to start up from a compatible network server (NetBoot)
Press R during startup Force PowerBook screen reset
Press T during startup Start up in FireWire Target Disk mode
Press Shift during startup start up in Safe Boot mode and temporarily disable login items and non-essential kernel extension files (Mac OS X 10.2 and later)
Press Command-V during startup Start up in Verbose mode.
Press Command-S during startup Start up in Single-User mode (command line)

creating windows service using pyinstaller

copied from http://www.nabble.com/windows-service-sample-using-pyInstaller-td16626208.html

# Usage: 
# service.exe install
# service.exe start
# service.exe stop
# service.exe remove

# you can see output of this program running python site-packages\win32\lib\win32traceutil 

import win32service

import win32serviceutil
import win32event
import win32evtlogutil
import win32traceutil
import servicemanager
import winerror
import time
import sys

class aservice(win32serviceutil.ServiceFramework):

    _svc_name_ = "aservice"
    _svc_display_name_ = "aservice - It Does nothing"
    _svc_deps_ = ["EventLog"]

    def __init__(self,args):
        win32serviceutil.ServiceFramework.__init__(self,args)

        self.hWaitStop=win32event.CreateEvent(None, 0, 0, None)
    self.isAlive=True

    def SvcStop(self):

        # tell Service Manager we are trying to stop (required)
        self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)


    # write a message in the SM (optional)
        # import servicemanager
        # servicemanager.LogInfoMsg("aservice - Recieved stop signal")

    # set the event to call
        win32event.SetEvent(self.hWaitStop)


    self.isAlive=False

    def SvcDoRun(self):
        import servicemanager
        # Write a 'started' event to the event log... (not required)
       
#
win32evtlogutil.ReportEvent(self._svc_name_,servicemanager.PYS_SERVICE_STARTED,0,
servicemanager.EVENTLOG_INFORMATION_TYPE,(self._svc_name_, ''))


        # methode 1: wait for beeing stopped ... 
        # win32event.WaitForSingleObject(self.hWaitStop, win32event.INFINITE)

        # methode 2: wait for beeing stopped ...
        self.timeout=1000  # In milliseconds (update every second) 


        while self.isAlive:

            # wait for service stop signal, if timeout, loop again
            rc=win32event.WaitForSingleObject(self.hWaitStop, self.timeout) 

            print "looping"


        # and write a 'stopped' event to the event log (not required)
       
#
win32evtlogutil.ReportEvent(self._svc_name_,servicemanager.PYS_SERVICE_STOPPED,0,
servicemanager.EVENTLOG_INFORMATION_TYPE,(self._svc_name_, ''))


        self.ReportServiceStatus(win32service.SERVICE_STOPPED)

    return

if __name__ == '__main__':

    # if called without argvs, let's run !

    if len(sys.argv) == 1:
        try:

        evtsrc_dll = os.path.abspath(servicemanager.__file__)
        servicemanager.PrepareToHostSingle(aservice)
        servicemanager.Initialize('aservice', evtsrc_dll)
            servicemanager.StartServiceCtrlDispatcher()

        except win32service.error, details:
            if details[0] == winerror.ERROR_FAILED_SERVICE_CONTROLLER_CONNECT:
                win32serviceutil.usage()
    else:
        win32serviceutil.HandleCommandLine(aservice)

Get the windows service state using Python

following code can be used to find if any service is installed and if so then return the state of the service.

import wmi

class servicePython():
    def __init__(self, serviceName):
        self.c = wmi.WMI ()
        self.serviceName = serviceName

    def setServiceName(self, serviceName):
        self.serviceName = serviceName

    def getStatus(self):   
        srv = c.Win32_Service (name=self.serviceName)
        if srv != []:
            return c.Status
        return False

TIPS: WX.Python.Grid: Removing the selected Rows

lst = None
no = self.grid_ShareDetails.GetNumberRows()
lst = sorted(self.grid_ShareDetails.GetSelectedRows())
lst.reverse()
for l in lst:    
    self.grid_ShareDetails.DeleteRows(l,1)

Tips : wx.Python : Close button not working.

If the close button does not work then add the following entries

self.Bind(wx.EVT_CLOSE, self.quit)

under the __init__ function and create a new function as

def quit(self, event):
self.Destroy()

Disable the “Use the Web service to find the correct program” Dialog

Create the following DWORD key NoInternetOpenWith = 1 at

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer

A nice Defrag Utility

Today i came across a nice  defrag utility which is free and have most of the features, One can download it from http://www.defraggler.com/.