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Archive for the 'NIX Posts' Category

WordPress: Dealing with Comment and User Registration Spam.

This is a fine one.  Anyone who uses WordPress may need to deal with this.  Unfortunately, despite using reCAPTCHA, Akismet still picks up tons of span on my blog.  So why am I getting spam comments when I have reCAPTCHA? The answer could surprise you.

Linux / Akonadi: The QtSQL driver ‘QMYSQL’ is required by your current Akonadi server configuration.

PROBLEM
Another day brings another bug. This time it’s with the Akonadi server failing or unable to start.  This error followed a recent update I’ve done on my Fedora box.  This is what greeted me each time I started up KDE:

The QtSQL driver ‘QMYSQL’ is required by your current Akonadi server configuration.
The following drivers are installed: [...]

Thunderbird / Firefox / Linux: Error showing url: Failed to execute child process

PROBLEM
On Linux, you receive this error when trying to open up links from inside Thunderbird emails:

Error showing url: Failed to execute child process "/usr/lib/firefox-3.0.5/firefox" (No such file or directory)

SOLUTION

Firefox: Firefox could not install the file at ‘URL’ because: Signing could not be verified

PROBLEM
Just today an issue came up for me installing the google toolbar.  (This Google toolbar has been in Beta for a while now, which caught my attention and may or should catch yours: Beta releases are buggy.  That may be beside the point though since I don't care as long as it does it's [...]

Creating associative or hash arrays in bash using sed and strings without the use of arrays, looping and conditionals.

Hashes are a certainly very important part of any language.  If you're not used to hashes, you may not see their potential at first.  However, having used them in several languages now, hashes always ended up reducing my code significantly especially when only complex solutions would only do otherwise.  However, bash or ksh for [...]

Apache: Configuring mod_security (modsecurity) for Apache on Fedora.

INTRODUCTION
Most people today know or have some idea what a firewall is.  For those not too familiar with it, it's essentially a piece of software or hardware that sits between your computer and the internet (outside world) helping to prevent unauthorized access to your computer / workstation.  The firewall does this by blocking certain [...]

Linux: Enable extended httpd status reports in Apache through service: fullstatus

Apache HTTPD is the most popular web server to date.  It's extensible and configurable to meet various needs both small and big.  Here we'll focus on extending it's reporting functionality by enabling full status capability to see more granularity in status reports.  As you probably know, the service on Red Hat Linux systems can [...]

Web and Networking: Securing the Apache HTTPD (port 80) configuration from malicious scans.

It's still a surprise to most just how much scanning and probing by either hackers or malicious software is going on on the web when they do find out.  I mean, do you really know how many times your workstation or home network get's hit by attempted intrusions and invasions?  I was never able to [...]

Fedora 10+: UI video / graphics problems upon reboot to Fedora 10+. Graphics are unreadable.

PROBLEM
One of the first things that went wrong after upgrading to Fedora 10 was the UI screen was unreadable / undescernable.  The screen was entirely messed up and though the keyboard worked fine, it wasn't easy to discern the UI windows from the shades of red, yellow, blue, green etc grany dots that showed [...]

Fedora 10: unable to authenticate user and reenabling the root login access.

PROBLEM
In Fedora 10, the root login was disabled into the GUI, giving you a unable to authenticate user message.  You may have noticed that you got a warning about this in Fedora 9 but it wasn't yet disabled then.  Not so in Fedora 10 so this might be something you would want to do [...]


     
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