Application: keryx

What it is:

Keryx is a free and open source tool for easily managing packages on
offline Debian based computers including support for Ubuntu and Linux
Mint. It provides an easy graphical interface to help install and
upgrade software.

To know more about:

To download:


Application: Unison

What it is:

Unison is a simple, lightweight backup program. It is GUI-driven,
which makes it well suitable for new Linux users. It is capable of
backing up files and folders to local and remote locations (via SSH)
and can run scheduled.


Unison offers several advantages over various synchronization methods
such as CVS, Coda, rsync, Intellisync, etc. Unison can run on and
synchronize between Windows and many UNIX platforms. Unison requires
no root privileges, system access or kernel changes to function.
Unison can synchronize changes to files and directories in both
directions, on the same machine, or across a network using ssh or a
direct socket connection.

Transfers are optimised using a version of the rsync protocol, making
it ideal for slower links. Unison has a clear and precise
specification, and is resilient to failure due to its careful
handling of the replicas and its private structures.

To know more about:

To install in Ubuntu:

sudo apt-get install unison


Application: Mondo

What it is:

Mondo is reliable. It backs up your Debian GNU/Linux server or workstation to
tape, CD-R, CD-RW, NFS or hard disk partition. In the event of catastrophic
data loss, you will be able to restore all of your data [or as much as you
want], from bare metal if necessary. Mondo is in use by numerous blue-chip
enterprises and large organizations, dozens of smaller companies, and tens of
thousands of users.


Mondo is comprehensive. Mondo supports LVM, RAID, ext2, ext3, JFS, XFS,
ReiserFS, VFAT, and can support additional file systems easily. It supports
adjustments in disk geometry, including migration from non-RAID to RAID. Mondo
runs on all major Linux distributions and is getting better all the time. You
may even use it to backup non-Linux partitions, such as NTFS.

To know more about:

To install in Ubuntu:

sudo apt-get install mondo

Wonder Shaper

Application: Wonder Shaper

What it is:

An easy to use traffic shaping script that provides these improvements:
* Low latency for interactive traffic (and pings) at all times
* Allow websurfing at reasonable speeds while uploading / downloading
* Make sure uploads don’t hurt downloads
* Make sure downloads don’t hurt uploads

It does this by:
* Limiting upload speed slightly, to eliminate queues
* Limiting download speed, while allowing bursts, to eliminate queues
* Interactive traffic skips the queue
* ACKs and tiny packets skip the queue

Configuring the wondershaper requires you to accurately and precisely
determine your consistent upload and download speeds.

The wondershaper is the simplest, easiest to use, entry level, traffic
shaping script provided by Debian.

After installing this package, read highly the detailed instructions:


To know more about:

To install in Ubuntu:

sudo apt-get install wondershaper

tux cut

Application: Tux Cut

What it is:

Tux cut is this is a simple program to disconnect  the network  user
in the same network , NetCut is a Software that helps network admin by
purely on ARP protocol . List IP-MAC Table in secs, turn off & On
network on any computer on your LAN including any device like router ,
switcher. Also, can protected user from ARP SPOOF attack .

To know more about:

To Install in Ubuntu:

First you have to download .deb file from

now open a terminal an type the following

$sudo dpkg -i TuxCut-3.2_all.deb

How to Reformat an External Hard Drive to NTFS Format In Linux

If you have files that are bigger than 4GB in size, you will find that you can’t back them up to your external hard disk, even though it has 1TB of storage space. The reason being, when you first bought the hard disk, it is pre-formatted with FAT32 format, and in case you don’t know, FAT32 has a 4GB file size restriction. This means that it can’t store files that are bigger than 4GB in size.

A good way to overcome this is to reformat the external hard disk to NTFS format. NTFS does not has a 4GB file restriction and can be accessed easily from Windows, Mac and Linux (with the help of NTFS-3G).

Mac and Linux users might be tempted to reformat the hard disk to either HFS (for time machine) or Ext3 format. It will work well with your computer, but in the event that your system crashes and you want to retrieve your backup files from other computer (that are not Mac or Linux), you might have difficulties getting it to read your files.

Update: Before you try this, please back up all your files from on your external hard drive. The process will completely wipe off all data on your hard disk.

Reformat external hard disk to NTFS

In your Ubuntu Hardy, open up the terminal and install the following applications:

sudo apt-get install gparted ntfsprogs

Plug in your external hard disk.

Your system should detect the hard disk and automount it to your system.

Before you can do a reformat, you will have to unmount it. On the desktop, right-click on the hard disk icon and select “Unmount volume“.

Go to System->Administration->Partition Editor. On the top right, click on the dropdown box. You should see something like the image below. Select the entry that corresponds to your external hard disk.

On the main window, select the partition, right-click and select Format to -> NTFS. Click Apply.

That’s it. Your external hard disk is now in NTFS format.

installing Virtual box on Backtrack 5 or ubuntu


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root@bt # prepare-kernel-sources

root@bt # cd /usr/src/linux

root@bt # cp -rf include/generated/* include/linux/

root@bt # echo deb lucid contrib non-free >> /etc/apt/sources.list

root@bt # wget -q -O- | sudo apt-key add –

root@bt # apt-get update

root@bt # apt-cache search virtualbox

root@bt # apt-get install virtualbox-4.0