Multiple ssh configs
For github configs:


SecResearch Search Engine


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A quick Unix/Linux file permissions tutorial

VirtualBox in seamless mode

I have been using VirtualBox as a virtualization tool for the past 5 months now but I never used the seamless mode until today. And to tell you the truth, this feature is awesome. It lets you run two OSs simultaneously, similar to Vmware’s unity mode but much better. To get your guest OS running in seamless mode you need to do the following :

  1. Power up the guest machine.
  2. After the machine has started go to Devices (in the guest machine menubar) and mount VBoxGuestAdditions.iso in your cd/dvd drive. This file is located in “c:\program files\oracle\virtualbox\”.
  3. If autorun feature is enabled the guest additions should get installed automatically.
  4. Else, for a guest linux system, fire up your favorite shell, change directory to that of the cd drive and type ./
  5. On a Windows guest system, execute VBoxWindowsAdditions.exe
  6. Reboot.
  7. In the menubar, click on view and you should see an option “Switch to Seamless Mode”.
  8. Click on it or press “Host key + L”.

I am running a BT5 guest and on Windows 7 using seamless mode. This is the screenshot:

Connecting through proxy: ubuntu/debian

  1. vim /etc/bash.bashrc
  2. Insert the following at end of the file:
  3. http_proxy=http://username:password@proxy_addr:port/
  4. You can omit the username:password part if your proxy does not require authentication.
  5. wq from vim and you are done!