How to install a professional image editing tool (KRITA) for Ubuntu 9.10

KRITA is a free image editing tool that ist pretty versatile and helps you not only to edit images, but also to use it for more artistic work on e.g. tablet PCs. It will surely remind you of Photoshop.
The easiest way to install KRITA is to download it over the Ubuntu Software Center. Do not take the complicated way to install it manually...

First go to Applications/Ubuntu Software Center:


Type in the searchfield KRITA and press Enter to mark KRITA for installation.
As KRITA appears, double click it, and then just klick on the Install button, start the installation and wait some seconds.


Now KRITA should appear checked as it has beeninstalled. That's it!


How to enable active corners aka Exposé in Ubuntu 9.10 with Ubuntu Tweak

If you always wanted the Exposé effect on your Ubuntu Desktop, here you go!  Active corners, known from Mac as Exposé, allow you e.g. to see all your open windows at once just by one mouse move into the corner of the desktop. Very useful if you are a multi-tasking god or goddess!

First open you terminal and copy & paste:

sudo apt-key adv --recv-keys --keyserver FE85409EEAB40ECCB65740816AF0E1940624A220

Log in with your admin password and continue:

sudo gedit /etc/apt/sources.list

Then add the following lines at the end of the file:

deb karmic main
deb-src karmic main

The source of Ubuntu tweak will be added to your repository. Updates for Ubuntu-Tweak will be installed automatically in future. Install Ubuntu-Tweak:

sudo apt-get update
sudo apt-get install ubuntu-tweak

Before using Ubuntu-Tweak, make sure you enabled visual effects for your desktop. Go to System/Preferences/Appearance an check under Visual Effects "Normal".

Check your system tools for Ubuntu-Tweak, open it and go to Desktop, then to Compiz Fusion as you can see here:
tweak tweak2 tweak3

Now you can enable a function for every corner, as you like. That's it.

How to allow webdav connections without https / SSL in Windows 7

By default it is not possible to connect to webdav resources without SSL encryption in Windows 7. To enable unencrypted connections (http and not just https), follow these steps:

Press the keys [Windows] + [R] to open the windows command line and enter


to start the registry editor. Then go to the registry branch:


and change the value for "BasicAuthLevel" to "2" (decimal). Then restart Windows.

How to get a list of all open ports on Windows 7, Vista and XP?

There is a small freeware Utility called CurrPorts from Nirsoft that displays all open ports on windows.

Download CurrPorts to your computer:

32Bit version:

64Bit version:

Unpack the .zip file and double click on the file cports.exe to start CurrPorts. The application will show you a list of all open ports and offers the ability to apply filters on the list.


How to reset the administrator password in ISPConfig 3

If you lost your ISPConfig 3 administrator password, you can reset it with the following SQL query.

UPDATE sys_user SET passwort = md5('admin') WHERE username = 'admin';

The SQL query sets the password to "admin" for the user "admin", it has to be executed in the ISPConfig mysql database, e.g. with phpmyadmin. If you dont have phpmyadmin installed, then the query can be executed with the mysql commandline utility as well:

Login to the mysql database.

mysql -u root -p

Then enter the password of the mysql root user. To switch to the ISPConfig database, run this command:

use dbispconfig;

And execute the SQL command:

UPDATE sys_user SET passwort = md5('admin') WHERE username = 'admin';

Finally close the mysql shell:


How to open winmail.dat files on Ubuntu and Debian Linux

The winmail.dat file is a container file format used by Microsoft Outlook to send attachments in richtext formatted emails. To open winmail.dat on Linux, use the tnef utility.


sudo apt-get install tnef


Open a shell window, navigate to the directory where the winmail.dat file is saved,  then execute the command:

tnef winmail.dat

to extract all files that are stored in the winmail.dat into the current directory.

How to improve text readability in Windows 7

Windows 7 comes with a handy utility to tune the readability of text. To start cttune, press the keys [Windows] + [R] to open the windows command line. Then enter


and click on "OK" to open the ClearType Text Tuner.


Then follow the steps of the tuning wizard by clicking on next and selecting the text samples that look best on your computer.


How to enable port 465 (smtps) in postfix mailserver

More and more internet access providers are closing port 25 to reduce spam except for connections to their own mailservers. If you run your own mailserver and have problems to connect to it on port 25, you can enable port 465 (smtps) in postfix as a workaround. Edit the /etc/postfix/ file:

vi /etc/postfix/

and remove the # in front of the smtps line. Example for Debain 5, change the line:

#smtps     inet  n       -       -       -       -       smtpd


smtps     inet  n       -       -       -       -       smtpd

and restart postfix:

/etc/init.d/postfix restart

How to delete saved passwords for network drives in Windows

If you saved a password for a network drive in windows and want to remove it, press the keys [Windows] + [R] to open the windows command line. Then enter

control keymgr.dll

and click on "OK" to open the windows credential manager which allows you to manage and delete passwords saved in Windows.


This procedure works for Windows XP, Vista and Windows 7.

How to install Windows 7 on a Netbook without DVD drive

To install Windows 7 on a Netbook without DVD drive, a bootable USB stick with Windows 7 is needed as installation media. The following FAQ describes the steps to create such a USB stick.

1) Create a ISO image of your Windows 7 DVD. If you have already a .iso file e.g. when you downlodaed Windows 7 from the Microsoft online store, then proceed with step 2. Otherwise we create the Iso file now. I will use the small freeware program called LC Iso Creator from Lucersoft.

Download the file that conatains the LC ISO Creator software and unpack it. Then double click on the LCISOCreator application, select your DVD drive that contains the Windows 7 DVD and select a place were the .iso file shall be stored.


2) Now download the "Windows 7 USB/DVD Download Tool" from the microsoft website and install it. This tool will copy the .iso imago on a USB stick and prepares the usb stick as installation media.

Click on "Start" and then on "Windows 7 USB/DVD Download tool" which is listed in the Section "All Programs".


Select the ISO image in the source file box and click on next.


Click on "USB Device".


Select your USB stick in the dropdown list and click on "Begin Copying".