nixCraft Linux Sys Admin Blog

Ubuntu Linux: Legal Codecs and DVD Playback For All Users

Posted: 19 Sep 2008 05:09 PM PDT

In the United States and many other countries, companies or developers or manufacturers must pay patent royalties to use an MP3 player or MP3 Encoder or Windows movie decoders. There is also conflicts between patent licenses and the licenses of application source code, so mp3 support is not provided out of box. This has been done for legal reasons. Now, Canonical (parent company for Ubuntu) offering proprietary Codecs for Ubuntu Linux.

PHP: Verify And Sanitize Email Address

Posted: 19 Sep 2008 06:41 PM PDT

Q. How do I verify input data such as email address under PHP programming language?

Answer to "PHP: Verify And Sanitize Email Address"

Shell: How To Remove Duplicate Text Lines

Posted: 19 Sep 2008 06:05 PM PDT

Q. I need to sort data from a log file but there are too many duplicate lines. How do I remove all duplicate lines from a text file under GNU/Linux?

Answer to "Shell: How To Remove Duplicate Text Lines"

Apache Error Client Denied By Server Configuration

Posted: 19 Sep 2008 05:46 PM PDT

Q. I'm running Apache 2 Web sever under CentOS Linux and getting an error that read as follows:

[Wed Sep 17 21:53:49 2008] [error] [client 122.1xx.y9.zzz] client denied by server configuration: /var/www/examples.com/

How do I fix this error?

Answer to "Apache Error Client Denied By Server Configuration"

FreeBSD: Apache No such file or directory: Failed to enable the 'httpready' Accept Filter

Posted: 19 Sep 2008 05:28 PM PDT

Q. I've installed Apache 2.2 from FreeBSD 7.0 ports and when I try to start I get following warning on screen:

Performing sanity check on apache22 configuration: Syntax OK Starting apache22. [Wed Sep 17 22:01:58 2008] [warn] (2)No such file or directory: Failed to enable the 'httpready' Accept Filter

How do I fix this error?

Answer to "FreeBSD: Apache No such file or directory: Failed to enable the 'httpready' Accept Filter"