Tech Blog » Open Source

frank — Fri, 23 Jul 2010 06:23:55 +0000

A beautiful plugin that creates eye pleasing social media links. This is a great example of using javascript and css to achieve aesthetics.

Changing Mysql data directory require change to AppArmor

frank — Thu, 15 Apr 2010 18:44:43 +0000

After a bit of googling and hair-pulling, I realized that if I just changed the datadir directive in my.cnf will cause mysql start to fail on Ubuntu. The other thing is to add permissions to apparmor for mysql to access the new data directories.

Steps
1. sudo vi /etc/apparmor.d/usr.sbin.mysqld
2. Add
/newdir/ r,
/newdir/** rwk,
3. sudo /etc/init.d/apparmor restart
4. sudo /etc/init.d/mysql restart

If that still does not work, check the nix permissions to be sure mysql is owner and group for the new directory recursively.

Ubuntu 9.10 Karmic slow Firefox

frank — Tue, 08 Dec 2009 18:54:38 +0000

There is a bug in the IPv6 lookup in Karmic that is making any application requesting IPv6 while a NAT is not configured to respond to IPv6 respond very slowly. It is still a bug not solved at this time. Buta solution for Firefox is given here as a work around for now.

Sphinx Search default limit is 20

frank — Sat, 03 Oct 2009 04:30:09 +0000

When using the sphinx api, you must use SetLimts if you want more than 20 records. Currently, it is not documented on the sphinx api doc.

Fatal error: Call to undefined function: curl_init in php

frank — Sat, 03 Oct 2009 02:50:01 +0000

For some reason, my workstation with Ubuntu 9.04, php5, apache2 and php5-curl install was giving me the curl package not installed message. Well, it turns out that for some reason, my default /etc/php5/apache2/php.ini had the extension directory pointing to /usr/lib/php5/ext/ while all the extensions were in /usr/lib/php5/20060613/

I was trying to figure out why I am not seeing curl.so in the ext directory after I have apt-get installed and removed php5-curl many times. Solution is usually very simple.

VMware Server must be reconfigured when there is a kernel upgrade

frank — Tue, 18 Aug 2009 16:42:09 +0000

If the linux kernel is upgraded, vmware will not load http://localhost:8222. It requires a reconfigure when this happens. Do the following.

sudo /usr/bin/vmware-config.pl

Forget your mysql root password?

frank — Tue, 07 Jul 2009 05:33:59 +0000

This following line saved my butt when something happened and my root password was no longer working.

sudo dpkg-reconfigure mysql-server-5.0

It will allow you to reset your root password without messing with the data or any other configuration in my.cnf.

Ubuntu apache2 virtualhost setup problems

frank — Tue, 05 May 2009 05:44:35 +0000

If you are getting error messages when starting apache2 like

“Could not reliably determine the server’s fully qualified domain name, using 127.0.1.1 for ServerName”
or
“[warn] _default_ VirtualHost overlap on port 80, the first has precedence”

you need to make sure a couple of lines are in your /etc/apache2/httpd.confÂ file.

ServerName localhost
NameVirtualHost *:80

How to do that Mysql thing in MSSql?

frank — Wed, 29 Apr 2009 17:15:49 +0000

Ever wonder how to translate something you normally do between Mysql and MSSql?
Here is a good list of parity between the two.

Also, one section left open by that article is date formatting. After reading that, you can see why it was left out. It is quite a topic on its own.
Date Formats in MSSql

Ubuntu 9.04 Vmware Arrow Keys Problem

frank — Tue, 28 Apr 2009 04:45:53 +0000

I finally found how to get all those keys working on my newly installed Ubuntu 9.04 with my XP VM. The issue is that all the arrow keys and delete key don’t work. There are others too but not listed. So a bit of googling, I found that you have to map the keys in a vmware config file to solve the problem. So this is what needs to be done.

1. Edit /usr/lib/vmware/config
2. Add the following to the end.
xkeymap.keycode.108 = 0x138 # Alt_R xkeymap.keycode.106 = 0x135 # KP_Divide xkeymap.keycode.104 = 0x11c # KP_Enter xkeymap.keycode.111 = 0x148 # Up xkeymap.keycode.116 = 0x150 # Down xkeymap.keycode.113 = 0x14b # Left xkeymap.keycode.114 = 0x14d # Right xkeymap.keycode.105 = 0x11d # Control_R xkeymap.keycode.118 = 0x152 # Insert xkeymap.keycode.119 = 0x153 # Delete xkeymap.keycode.110 = 0x147 # Home xkeymap.keycode.115 = 0x14f # End xkeymap.keycode.112 = 0x149 # Prior xkeymap.keycode.117 = 0x151 # Next xkeymap.keycode.78 = 0x46 # Scroll_Lock xkeymap.keycode.127 = 0x100 # Pause xkeymap.keycode.133 = 0x15b # Meta_L xkeymap.keycode.134 = 0x15c # Meta_R xkeymap.keycode.135 = 0x15d # Menu
3. Save it
4. Restart vmware

Thank goodness. What a pain this was to use with a whole bunch of keys not working.