The Geek Stuff

4 Awk If Statement Examples ( if, if else, if else if, :? )

by Sasikala on February 17, 2010

Linux Awk Tutorials - Conditional If Else Statement Examples This 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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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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Turbocharge Awk Scripts – Translate into C (Sudoku Revisted)

by Bill Duncan, VE3IED on February 10, 2010

Photo Courtesy: Kol Tregaskes

In the first article of this series we saw how awk could be put to work (or play) for more than just processing text. The simple script demonstrated the use of associative arrays, recursion and how we could use more arrays (more than required to represent the data) to speed up the processing. There were some teaser ideas left at the end if you were looking for something faster.
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Nagios XI Review (Free Nagios core Vs Nagios XI)

by Ramesh Natarajan on February 8, 2010

Nagios Price:

Nagios Core is free and open source.
Nagios XI is $1,295 (to monitor unlimited number of hosts). This is perpetual license — Once you’ve purchased the software, use it as long as you want without any additional license fees.

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7 Powerful Awk Operators Examples (Unary, Binary, Arithmetic, String, Assignment, Conditional, Reg-Ex Awk Operators)

by Sasikala on February 3, 2010

Linux Awk Tutorials - Awk Reg-Ex Operator Examples This 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, and awk built-in variables.

Like any other programming language Awk also has lot of operators for number and string operations. In this article let us discuss about all the key awk operators.
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Unix Less Command: 10 Tips for Effective Navigation

by Ramesh Natarajan on February 1, 2010

I personally prefer to use less command to view files (instead of opening the file to view in an editor). Less is similar to more command, but less allows both forward and backward movements. Moreover, less don’t require to load the whole file before viewing. Try opening a large log file in Vim editor and less — you’ll see the speed difference.

The navigation keys in less command are similar to Vim editor. In this article, let us look at few less command navigation and other operations which will make you a better command line warrior.
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