On some of the Linux distribution SELinux is enabled by default, which may cause some unwanted issues, if you don’t understand how SELinux works and the fundamental details on how to configure it. I strongly recommend that you understand SELinux and implement it on your environment. But, until you understand the implementation details of SELinux you may want to disable it to avoid some unnecessary issues.
 
To disable SELinux you can use any one of the 4 different methods mentioned in this article.
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Photo courtesy of sean dreilinger

I’m happy to announce the winners of the 3 books giveaway contest. that was conducted on behalf of 1st Birthday of the blog.

Following three winners are randomly selected and will receive the corresponding PDF version of the book.
 

• Hacking Vim Book Winner: Pedro Parra (comment#37)
• Lighttpd Book Winner: Williwow (comment#80)
• Xen Virtualization Book Winner: Tommy Skarateppen (comment#196)

The three winners were selected from the total of 200 awesome comments. Please note that these winners were selected by the random number generator at the random.org as shown in the following image.
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On the 1st Birthday of the blog, I would like to sincerely appreciate all the support provided by you to keep this blog going. Exactly a year ago on this day (May 27th, 2008), I posted my first article 5 Basic Linux SSH Commands on the blog.
 
Now the blog has over 120 high quality articles on Linux and open source. I was also able to publish my first free Linux 101 Hacks eBook. Please refer to the Best of the Blog section to check-out few of my articles.
 
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This article is part of the on-going Vi / Vim Tips and Tricks.  Firefox is the best browser. Vim is the best editor. Wouldn’t be nice if we can combine the best browser (Firefox) with the best editor (Vim)?

In this article let us review how to use the powerful Vim navigation concepts inside Firefox Browser using the Vimperator Firefox add-on. Let us review how to install the vimperator plugin, and 8 Powerful features to make Firefox browser behave like Vim.

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Some of the open source application comes with postgreSQL database. To maintain those application, companies may not hire a fulltime postgreSQL DBA. Instead they may request the existing Oracle DBA, or Linux system administrator, or programmers to maintain the potgreSQL. In this article let discuss about the 15 practical postgresql database commands which will be useful to both DBA and expert psql users.

Also, refer to our previous article about 15 Practical PostgreSQL DBA Commands.
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Starting up and shutting down the oracle listener is a routine task for a database administrator. However a Linux system administrator or programmer may end-up doing some basic DBA operations on development database. It is critical for non-DBAs to understand the basic database admin activities.

In this article, let us review how to start, stop, check status of an oracle listener using Oracle listener control utility LSNRCTL.
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In this article let us review how to perform normal file operation on a compressed files using the powerful Linux Z commands.

Some of these z commands uncompresses the file temporarily in the /tmp directory to perform the specified operation. Some of the z commands uncompresses it on the fly to perfom the specified operation. But, under any case, z commands gives the peace of mind, as you don’t want to worry about the overhead of uncompressing the compressed file to perform an operation.

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