Knowledge Base

Slick Knowledge Base brings you dozens of articles from various topics. Web design, programming, operating systems, software, hardware. Explore and enjoy!

Knowledge is the biggest treasure of humanity. I believe that by sharing my experience from IT sector and big passion to it, I will be able to wake up creativity inside you.


  • Installation of NetBeans in Ubuntu or Debian is very easy but before you do so, you have to install Java JDK which is required by NetBeans to work. 1. Installation of Java Development Kit Go to Oracle’s Java SE Development Kit 7 Downloads, accept License Agreement and download proper version of JDK in tar.gz file.… read more

  • To get most popular Windows fonts in Debian (6.0.7) download this package. Then install it by typing in terminal:

  • To install Dropbox in Debian we'll use terminal. Follow steps below to finish this process successfully. Download First step is to download package from it's official website. Because Ubuntu packages should work in Debian – download Ubuntu version instead of this dedicated to Debian (I had few problems with it). I've downloaded 64-bit version. Next,… read more

  • When a new version of Ubuntu is available, you can easily upgrade your system to the newest version by entering following command in terminal:

  • WP Supersized allows You to enjoy full-sized background pictures on Your website. Unfortunately, if You will like to combine this feature with the NextGEN Gallery's HTML description of each picture (typed into NextGEN description textarea filed), in one specific case the script may break the whole site. It can occur when You will type new line… read more

  • In this article we won't talk about what is Secure Shell – we'll just focus on how to use this protocol in Ubuntu. By default Ubuntu is unable to manage SSH connections because it's not installed. To be able to connect with remote machine we have to install OpenSSH Server on our local machine. Open… read more

  • In general – tar is an Unix program used to create data archives packed in one, single file. This article will quickly show how to create and extract such archive. Created file will be also compressed with bzip2. To create an archive from a directory or file: To extract this archive type: For more informations… read more

  • Crontab Backup If you use cron quite often, it is a good practice to backup it from time to time. This can be achieved in a very easy way. First, see what is your crontab content: Now just redirect standard output from screen to the destination file – our backup. This command will create a… read more

  • Semafor to prosty plik, którego zadaniem jest blokowanie wywołania n-tej instancji skryptu jeśli instancja n-1 nie zakończyła jeszcze swojego działania. Załóżmy, że napisaliśmy skrypt, którego zadaniem jest praca nad dużą ilością danych w bardzo krótkim odstępie czasu. Plik ze skryptem jest wywoływany cyklicznie co minutę przez cron'a. Jeśli dane wywołanie skryptu zdąży w minutę wykonać… read more

  • Załóżmy, że pracujemy z aplikacją w PHP, której działanie i zachowanie opiera się w pewnym stopniu na zmiennych otrzymanych jako parametry na pasku adresu. Może zajść potrzeba, że będziemy potrzebowali adresu uszczuplonego o przykładowy parametr. Poniższy artykuł pokaże jak można przefiltrować długi adres z parametrami i przefiltrować go z niepożądanych elementów. Powiedzmy, że mamy hipotetyczną… read more

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