February 2010

Question: I would like to understand the basics of how to write and execute Cobol program on Linux OS. Can you explain it with a simple example?

Answer: In this article, let us review very quickly how to write a basic Hello World Cobol program and execute cobol program on Linux or Unix OS.

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Linux Awk For, While Loop ExamplesThis article is part of the on-going Awk Tutorial Examples series. In our earlier awk articles, we discussed about awk print, awk user-defined variables, awk built-in variables, awk operators, and awk conditional statements.

In this article, let us review about awk loop statements – while, do while, for loops, break, continue, and exit statements along with 7 practical examples.
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Photo courtesey: Jessica Finson

Photo courtesy: Jessica Finson

A while back we tried to customize unix prompt to look like Angelina Jolie.

Oh boy, didn’t I fail miserably in that attempt? Well, that didn’t stop me from trying an extreme makeover for mysql> prompt.

Let us face it. The following mysql> prompt is boring. Nobody wants to see it. Let us change the default mysql> prompt to something functional and useful.
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Get Source Code for any Linux Command

by Ramesh Natarajan on February 19, 2010

Question: How do I get source code of any Linux command?

Answer: For Debian family Linux distributions, you can get source code for any Linux commands using one of the two methods mentioned below.
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Linux Awk Tutorials - Conditional If Else Statement ExamplesThis article is part of the on-going Awk Tutorial Examples series. In our earlier awk articles, we discussed about awk print, awk user-defined variables, awk built-in variables, and awk operators.

In this awk tutorial, let us review awk conditional if statements with practical examples.
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Top 5 Best Linux Firewalls

by Ramesh Natarajan on February 15, 2010

As part of the contest we conducted recently, we got 160+ comments from the geeky readers who choose their favorite firewall.

Based on this data, the top spot goes to.. drum roll please..

iptables

If you are new to any of the top 5 firewalls mentioned here, please read the rest of the article to understand more about them.
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Question: I would like to understand the basics of how to write, compile and execute a Java program on UNIX / Linux OS. Can you explain it with a simple example?

Answer: In this article, let us review very quickly how to write a basic Hello World Java program and how to compile *.java program on Linux or Unix OS.

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How to Use Google Buzz in Gmail

by Ramesh Natarajan on February 11, 2010

If you are using Gmail, you might have already noticed the ‘Buzz’ link right below your inbox. Google buzz looks like a combination of twitter and facebook features built right in your email application.

What do you think about Google Buzz? Do you like it?
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