RewriteCond %{REMOTE_ADDR} !^123\.123\.123\.123
RewriteCond %{REQUEST_URI} !(\.(gif|jpg|css)$|^/maintenance\.html$)
RewriteRule ^(.*)$ /maintenance.html [R=302,L]

Ofcourse change the 123\.123\.123\.123 to your ip address and create a maintenance.html. This .htaccess will still serve images and css normally so you can use them in your maintenance page.

If you want to add more ip adresses just duplicate the line: RewriteCond %{REMOTE_ADDR} !^123\.123\.123\.123 and change the ip.

First off all you need to get your printer working under linux using Cups and make sure you have pdf support (apt-get install cupsd cups-pdf). I won't get into detail howto configure cups. This will be different from printer to printer and pretty well described on the internet.

• Download the script to  the script to generate an Avahi daemon config file provided by tjfontaine:

git clone https://github.com/tjfontaine/airprint-generate.git (apt-get install git - if you don't have git yet)

• To run this script you need python and python-cups:

apt-get install python python-cups

• run the script:

cd airport-generate/
python airprint-generate.py

• copy the created files to your avahi services config directory:

cp *.service /etc/avahi/services/

After this you should be ready to go. I still did get one error in my cups error log:
Request from "fe80::7ec5:37ff:fe09:62df%eth0" using invalid Host: field "office.local"

To get this working I still needed to add one line in /etc/cupsd.conf  :
ServerAlias *

The list

Optimize front-end

• Combine CSS files as much as possible
• Combine Javascript files as much as possible
• Always place a favicon.ico (saves needless 404 request and file searches)
• If you use a lot of small images for your website make use of CSS Sprites
• Use GZIP compression

Optimize PHP

• Install APC (Alternative PHP Cache). This will speed your php up a lot
• if you don't use .htaccess or have control over the server remove .htaccess ability and set any options in your apache virtual host file.
• don't use current directory (".") in your include path but instead link directly to files in your code: include("./example.php")
• Watch how many include paths you have. It will search in every folder for to find include file.
• use persistent mysql connection (mysql_pconnect)

This list is based on the presentation of Rasmus Ledorf at Campus Party 2010 - http://talks.php.net/show/cp10. Out of this e've compiled a small checklist of things to do when you create a php website. This will make sure you will use all the simple tricks to make your website and PHP code to run fast. Further information on how to benchmark this look at the presentation of Rasmus.

This is because ZendFramework places all the properties in the Javascript array zendDijits and then add them to the elements after loading. However this will not work for the loaded Dialog because the ZendDijits are set in the view of the controller opening the dialog.

The simple solution to this is to use the declaritive formin the Zend_Dojo_View_Helper_Dojo by placing the following line in your code:

 
Zend_Dojo_View_Helper_Dojo::setUseDeclarative();
 

I placed this in my bootstrap.php right after the line where the Zend_Dojo_View_Helper is loaded.

Making de view helper declarative will place the dojo properties directly into the html of the elements.
Side-effect: the script will not be correctly verified as valid (x)html but it will solve the problem!

Evolution segfaulted with the following line in messages

[   56.897763] evolution[6320]: segfault at 0 ip b6a45d07 sp bff95824 error 4 in libglib-2.0.so.0.1800.2[b69e9000+b5000]

It turns out that importing fails on the ev-summary files in ~/.evolution/

The solution is deleting those ev-summary files. They will be regenerated by evolution. Because I have dozens of folders in my evolution I used the following line:

find ~/.evolution -name *ev-summary -print0 | xargs -0 rm

after that  evolution works just fine.

My install is a CentOS 5.2 installation but it should work under any fairly recent Linux distribution

Setting Poptop VPN for Iphone is done in just four steps:

1 Installing Poptop on your linux server

Some distributions already have pptpd, if not you can install it from source with the following steps.

Download the latest pptpd from Sourceforge.

Unpack pptpd, configure and run make install:

tar -zxvf pptpd-1.3.4.tar.gz
cd pptpd-1.3.4
./configure
make
make install

2 Configuring pptpd (poptop)

Now we need to configure the different files used by pptpd to setup up for the vpn:

/etc/pptpd.conf

option /etc/ppp/options.pptpd
localip 192.168.8.1
remoteip 192.168.8.234-238

/etc/ppp/options.pptpd

 name pptpd
refuse-pap
refuse-chap
refuse-mschap
require-mschap-v2
#require-mppe-128 //comment for iphone 4 
#opendns dns services, you can replace this by your dns provider
ms-dns 208.67.222.222
ms-dns 208.67.220.220
lock
nobsdcomp
nologfd

/etc/ppp/chap-secrets

# Secrets for authentication using CHAP
#set one or more username and passwords to use with the pptp VPN
# username    pptpd   password         IP addresses
username       pptpd   password        *

3 Setup the server for Masquerading/NAT

Because we want to share the internet connection of the server with the Iphone we need to do NAT. The following couple of lines enable this. I am assuming eth0 is the network interface conneted to the internet. Just first try this out by copy and pasting this into bash but to keep it working even after a reboot you can copy the following lines into /etc/rc.local

echo 1 > /proc/sys/net/ipv4/ip_forward
/sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
/sbin/iptables -A FORWARD -i eth0 -o ppp0 -m state --state RELATED,ESTABLISHED -j ACCEPT
/sbin/iptables -A FORWARD -i ppp0 -o eth0 -j ACCEPT
 
#and start pptpd
/usr/local/sbin/pptpd

4 Configuring the Iphone

On your iphone click settings > network >VPN > Add VPN Configuration

Click PPTP and fill in a description
the hostname of the server
account = the username filled in in /etc/ppp/chap-secrets
RSA SecurID: OFF
password, as filled in in /etc/ppp/chap-secrets
Encryption Level = Auto
Send All Trafic: ON

Now press save and when Turning VPN to ON it should connect to the server.

If you have any problems don't hesistate to ask in the comments.

Update iPhone 4:

According to C&P this setup doesn't work anymore on iPhone 4. Comment the line

#require-mppe-128

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We need to build these drivers so make sure you installed the following packages

build-essential
linux-headers-generic

for the use of the usb stick itself we need: dvb-utils

these are all to be found in synaptics.

now unpack the file and go into it's directory and type:
(when compiling for second time or new kernel, "make distclean")

make all
sudo make install

now download the firmware (right click save-as) for the AF9015 and place this in /lib/firmware

then do a:

sudo modprobe dvb-usb-af9015

and it will load all necessary modules.
Type dmesg to check if everything loaded

use scan to find all the channels which are available to this by using the right file for your region:

scan /usr/share/doc/dvb-utils/examples/scan/dvb-t/COUNTRY_YOURREGION > channels.conf

this file you can us to view tv in xine or me-tv

Error: Error #1502: A script has executed for longer than the default timeout period of 15 seconds. at mx.core::UIComponent/get owner() at mx.core::UIComponent/owns()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\core\UIComponent.as:8811] at mx.managers::PopUpManagerImpl$/nonmodalMouseDownOutsideHandler()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\managers\PopUpManagerImpl.as:820] at PopUpData/mouseDownOutsideHandler()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\managers\PopUpManagerImpl.as:980]

It turns out that it has to do with a certain id in one of our elements which had the id "owner" apparently this is used internally in flex as well. Simple to fix but pretty hard to find

Since the 'styleSheet' property returns a standard TextField instance it struck us as weird that setting its 'styleSheet' property didn't work. The TextArea class was trying to set textFormat which fails after setting the stylesheet of the textfield.

Error message:

This pointed us to the 'drawTextFormat()' function in the TextArea class. After taking a look we figured out what to do.

The problem turned out to be that every time you add text to your textarea the class tries to add a designated, or default flash-textFormat to the textfield. Adding Flash TextFormat objects to textfields conflicts with stylesheets. Our solutions was relatively simple: a small class extends of the textArea class.

Click continue for the fixing source

    import fl.controls.TextArea;
 
    /**
    * @makes it possible to do textArea.textField.styleSheet
    * @author Tim de Jong - Dooping VOF 2008 - tim -AT- dooping.nl
    * @version 001
    */
 
    public class doopingTextArea extends TextArea
    {
        public function doopingTextArea()
        {
            super();
        }
 
        override protected function drawTextFormat():void {
            if(!this.textField.styleSheet) super.drawTextFormat();
            else {
                setEmbedFont();
                if(_html) textField.htmlText = _savedHTML;
            }
        }
 
    }

Then load the stylesheet by passing it to the textField object inside the textArea.

var myTextArea = new doopingTextArea();
myTextArea.textField.styleSheet = styleSheetObject;

As you can see we simply check if a styleSheet exists and than decide whether or not to do the original text formatting or not. Now we're able to use CSS on TextArea's and keep styling and code neatly separated.

Solution:
myTextArea.setStyle("upSkin",Sprite);

Description:
Using a TextArea in actionscript 3 could come in handy as the Flash component adds in a ScrollBar by default. But it also provides some things you might not want there..

One of those things is the border, that is placed there by default.

Inspired by the solution posted here I found that you can override the skin that is used by default in the component ("upSkin") by using:

myTextArea.setStyle("upSkin",Sprite);

by overriding it with a Sprite, which is empty by default, all the visual aspects are cleared... including the border!