Some usefull IT tips

If (for some performance reason) you’re looking for some solution to speed up your Wordpress performance (or low down your CPU usage) you can try WP-Cache plugin.

I was looking for some good solution to fight with trackback spam, finally I think, I’ve found good solution - WordPress Trackback Spam Solution.

At optiniche.com you can find very usefull WordPress trackback tutorial - article explains what is trackback, how to locate the trackback link and finally, how to send trackbacks.

Task: check CPU(s) information
Solution: using command line (for example bash) type:
cat /proc/cpuinfo

Sample output (for 4 Intel Xeon machine):

If you have problem with your Wordpress (1.5.2, 2.0 or 2.1 with wp-cache 2.0.17) based pages after upgrading php to 5.1.2 (on Dreamhost or any other hosting company), you must fix wp-cache-phase2.php file to solve the problem.

To solve the problem:

Open wp-cache-phase2.php file* in your favourite text editor (I hope it’s not MS Word)
Find out wp_cache_ob_end […]

1.1. Basics on the Athlon Power Saving Mode
The HLT signal which is used by the normal idle-loop of the Linux kernel doesn’t normaly bring any significant power-saving on processors of the Athlon/Duron family (hereafter referred to as Athlon processors). To get real power-saving on an Athlon processor, you have to put the processor in the […]

[description taken from ubuntuforums.org but might be usefull for all Linux distros]
Some people have problems using mailto links with Thunderbird. To fix the “choose user profile” problem, follow this howto.

THUNDERBIRD: Open with firefox an URL contained in an email

Open Nautilus and type this in the address bar: ~/.thunderbird (if that doesn’t work, try ~/.mozilla-thunderbird)
Go your […]

How to password protect web directory/folder
1. Create .htaccess file with the content below:
AuthUserFile /home/username/htdocs/.htpasswd
AuthName “Password Protected”
AuthType Basic
require valid-user
Of course in the AuthUserFile type in the location of the .htpasswd file (i.e. when you want to store that file, you’ll create it in next step)

2. Set password for the user(users) (-c option creates .htpasswd file)
If it […]