Mar 132013
 

Master PDF Editor is a free tool for personal use on Linux systems, it is not open source, but is an option to consider for the tasks involving editing and modifying pdf files.
It is a complete solution for creating and editing both PDF and XPS files, and lets you add content to existing PDF and XPS files. You can add, edit, import, add images. You can also add text, or edit it. Similarly, you can add or remove pages, change the format of the pages, and of course change the PDF information, author, title, subject, keywords and other information about the document.

Besides these features, you can also encrypt and convert PDF files to XPS format.

Another interesting feature of this application is that it lets you create and edit forms, from buttons, combo boxes, list boxes, text entry boxes and more.

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Aug 262012
 

This is a genre I like and usually I play this kind of games in their flash/java online version but there are some nice Tower Defense games that can be downloaded and installed on Linux systems, today I’ll present you 3 of my favorites: Creeptd, Target Defense and Revenge of the Titans

But first a small introduction to what’s a Tower defense game:

The goal of tower defense games is to try to stop enemies from crossing a map by building towers which shoot at them as they pass. Enemies and towers usually have varied abilities, costs, and ability costs. When an enemy is defeated, the player earns money or points, which are used to buy or upgrade towers, or upgrade the number of money or points that are earned, or even upgrade the rate at which they upgrade.

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Nov 012011
 

After many years of administration of Unix/Linux systems and using bash for many tasks i’ve discovered the command tac, the contrary of cat,
What this command do it’s to concatenate and print files in reverse order, it writes each file to standard output, last line first.

bash$ cat file1.txt
This is the line 1.
This is the line 2.
 
bash$ tac file1.txt
This is the line 2.
This is the line 1.

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