Before enable this, let me introduce what deflate do. deflate is apache module, that main task is to compress all the output before serving or sending to client.

Nowadays most of the browser are enough expert to handle this. Here main technique is , apache will send the output in compressed format, after receiving this output your browser will uncompress it and render the formated output.

This tricks will really improve your site performance, because user will get your site with less time and bandwidth.

Let me give you an example: let’s think if you are using jquery javascript library that size is 94 Kilo bytes, but if you enable the deflate with default configuration, it will be only 14 Kilo bytes. unbelievable right ? believe me, it’s true. And we are using this on our most popular product http://www.somewhereinblog.net .

OK, now i am showing how you will do this:

first of all you need to enable deflate module. You know i am debian fan, so i am giving commands for debian linux, other linux/unix commands will almost same. as ubuntu is comes from debian, these commands will also work for ubuntu

Open a new terminal and give this command.
sudo a2enmod deflate

it will enable deflate. Wait, you are not finish yet. little work left.
create new file called deflate.conf in your apache conf.d folder. and paste the following code:
<Location />

# Insert filter
SetOutputFilter DEFLATE

# Netscape 4.x has some problems…
BrowserMatch ^Mozilla/4 gzip-only-text/html

# Netscape 4.06-4.08 have some more problems
BrowserMatch ^Mozilla/4\.0[678] no-gzip

# MSIE masquerades as Netscape, but it is fine
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
# Don’t compress images
SetEnvIfNoCase Request_URI \
\.(?:gif|jpe?g|png)$ no-gzip dont-vary

# Make sure proxies don’t deliver the wrong content
Header append Vary User-Agent env=!dont-vary

</Location>

save the file, and restart apache.

sudo /etc/init.d/apache2 restart

that’s all. now you can see the different.

**if you have not enabled header module of apache, please remove the line “Header append Vary User-Agent env=!dont-vary” from deflate.conf .

For more customization or option of deflate, please visit http://httpd.apache.org/docs/2.2/mod/mod_deflate.html

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On my first post of this searies i will talk about ETag. Before disable this, first we need to know what is ETags. From wikipedia:

An ETag (entity tag) is an HTTP response header returned by an HTTP/1.1 compliant web server used to determine change in content at a given URL. When a new HTTP response contains the same ETag as an older HTTP response, the contents are determined to be the same without further downloading. The header is useful for intermediary devices that perform caching, as well as for client web browsers that cache results. One method of generating the ETag is based on the last modified time of the file and the size of the file.

In certain situations, ETags may not improve the performance of a web application. For instance, some ETag generation schemes incorporate the file’s inode on the system. The file’s inode is unique to the file only on one specific machine. If a site has multiple servers, each with its own copy of the file (i.e. load balancing), then a user’s request for the same file may get served by a different machine. In that case, the inode will almost certainly be different and, if it is used to generate the ETag, it will cause the file to be re-downloaded.

So, this is not always helpfull for all type of sites. Always remember, if you are not using anything, you should not enable or kept enable on server.

Apache by default enable this ETags. We need to disable this to get better performance. Here i am describing the steps for debian and ubuntu linux.

We will take help from mod_header to disable ETags, so first we need to enable the mod_header (apache module)

sudo a2enmod header

sudo /etc/init.d/apache2 restart

this command will enable mod_header. Now open /etc/apache2/apache2.conf with your faviourate browser.

sudo nano /etc/apache2/apache2.conf

then paste the under given code to this apache2.conf file

Header unset ETag
FileETag None

now restart the apache2, and check if it working or not. If every thing OK, then you will not see the etags anymore

For better understanding i am giving you 2 screenshots.

Before ETag disable

After ETag disable:

If you don’t have root access to server, you still can do this from .htaccess , just copy that code to .htaccess instate of apache conf file.

Ask me if you have any question or problem about ETag.

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1. Download iPhone SDK using wget If you are using slow connection like me and trying...

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$ apt-get install imagemagick

it downloads the package and all it’s dependences from debian/ubuntu repository, and installed. now i have to install the support of php (as our product running on php)

$ apt-get install php5-imagick

then i restarted the apache server to take effect this new package installation. if your using php4 then the package name should be php4-imagick

$ /etc/init.d/apache2 restart

that’s all

if you need imagemagick for your ruby , you can install the librmagick-ruby package.

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Ok, now starting:

First on all let’s make a list of software a PHP developer need mostly:

1.Apache
2.PHP
3.Mysql
4.PHP IDE

Ok, let’s start with Apache. Debian & ubuntu use APT to manage the packages. You can easily install apache using apt, here is the command

Debian user:

su

Ubuntu user:

sudo su

Rest of the command ar same for both debian & ubuntu.

apt-get install apache2

It will install all the apache2 & all the related packages (software)
If you need to enable mod_rewrite, follow this link
Now install the PHP

Apt-get install php5 libapache2-mod-php5

This will install the php5 and configure your apache2 server for PHP. You don’t need to do anything.
Lets test the server, if it working ok.

touch /var/www/info.php

Chown www-data:www-data info.php

Now edit this info.php with your feviourate editor and add write code to show phpinfo():
and now browse http://localhost/info.php from your browser. Now check if all your requested library are installed.
if you need any more library, you can check if it already available on your debian/ubuntu package list.

apt-cache search php5-

then you will get the list of available php5 library. Now simple use this command to install it.

apt-get install php5-gd

(example, if you want to install php5 GD library)

Remember: after installing every extra packages, you must need to restart apache server

/etc/init.d/apache2 restart

Ok, so you have now apache2 and php5 installed system. Let’s install mysql:

apt-get install mysql-server-5.0 php5-mysql

It will install all the necessary packages to run mysql-server.
Now restart your apache to take effect.
Complete!!!! Server is allmost ready.
Now i am going to derive how you will transfer your old code to this new environment. Belive me it’s too simple, so don’t worry.

First of all copy your source code to /var/www, here is the details procedure:

mkdir /windows

Here we make a folder for C drive of windows to mount.
mount /dev/hda1 /windows
then we mount the C drive to windows folder (here i use hda1 as example, if your hdd is sata then it will be sda1)

cp -r windows/Apache2/htdocs/xyz /var/www

here we copied our xyz site to /var/www (in debian and ubuntu, default apache2 root folder is /var/www)

cd /var/www

chown -R www-data:www-data xyz

Now change the ownership to www-data

Now we need to move the mysql database, there is two way:

1.use phpmyadmin
2.simple copy the database from data folder
I am deriving the 2nd way.

cp -r /windows/Mysql/data/xyz /var/lib/mysql

chown -R mysql:mysql /var/lib/mysql/xyz

You are done.

PHP Ide for linux environment:

1.Zend ( i personaly use this)
2.PHPEd
3.PHPEclipse
4.quanta plus
5.emacs
6.vi
7.PHPedit

***I know this tutorial needs more edit, please make your comments if you got anything wrong, or missed anything. I want it a cool tutorial for php developers.

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if you want to release any deb file unofficaly for debian and need help to host it, send me the .deb file and don’t forget to add signature to your package.

** for testing i added the d4x on my repository, i will remove it.

please test my repository and give your feedback here.

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At last from yeasterday i avoid windows 100% .

Previously my home pc was runing on linux but my developemnt laptop was runing on windows & linux (mostly windows).

But from yeasterday i removed windows from my lapptop.

So back to linux .

Here is the list that i am using now:

My OS: Debian GNU/Linux (etch)
php Editor: Zend Development Environment(linux )
Email Client: Evolution
CD/DVD burning software: GnomeBaker
Mp3/audio player: Rythm Box, totem, amarok
DVD/Video: totem/xine
Browser: Iceweasel (firefox)
Office: openOffice.org
Image editor: gimp, inkspace
Project Time tracker: gnoTime
Downloader: d4x

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In default installion of apache2.2 on debian never enable mod_rewrite default. So you may need to enable .

First install the apache2.2 with this command :
debian user please use “su” before start this process
ubuntu user please use “sudo su” before start this process

apt-get install apache2 (it will install apache 2.2)

now use locate to find if the mod_rewrite.so is availble on your server

updatedb
locate mod_rewrite.so


it will found in “/usr/lib/apache2/modules”

new apache follow some folders to enable and desuable mods.
so now do this:

cd /etc/apache2/mods-enabled
touch rewrite.load
gedit rewrite.load (you may use any editor to edit this file)

now paste this following line

LoadModule rewrite_module /usr/lib/apache2/modules/mod_rewrite.so

Then edit /etc/apache2/sites-available/000-default

Find the following

Options Indexes FollowSymLinks MultiViews
AllowOverride None
Order allow,deny
allow from all

and change it to

Options Indexes FollowSymLinks MultiViews
AllowOverride all
Order allow,deny
allow from all

and finally restart Apache

/etc/init.d/apache2 restart

OK, you done

don’t forget to comment, if it works or not.

thanks.

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You can speed up your apt by searching the nerestrepositery of apt (for your distro/linux)

I tested some tools to do this, APT-SPY shows the best performance

From manpage:

apt-spy is a program that tests a series of Debian archive mirrors for bandwith. It writes an /etc/apt/sources.list with the fastest server.

Run this command as su or root next thing will done by apt-spy, it will write a new /etc/apt/sources.list and the olde one will be backup with sources.list.bak

apt-spy -d unstable -n 5

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“The GTK-Qt Theme Engine (also known as gtk-qt-engine) is a GTK 2 theme engine
that calls Qt to do the actual drawing. This makes your GTK 2 applications
look almost like real Qt applications and gives you a more unified desktop
experience.

Please note that this package is targeted at KDE users and therefore provides
a way to configure it from within KControl.”

Personaly i am using this package. And it’s works cool

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Here is the procedeure i followed from http://www.debian.org/doc/manuals/reference/ch-tips.en.html#s-chroot

See what i do:

main # cd / ; mkdir /sid-root
main # debootstrap sid /sid-root http://ftp.debian.org/debian/
... watch it download the whole system
main # echo "proc-sid /sid-root/proc proc none 0 0" >> /etc/fstab
main # mount proc-sid /sid-root/proc -t proc
main # cp /etc/hosts /sid-root/etc/hosts
main # chroot /sid-root /bin/bash
chroot # cd /dev; /sbin/MAKEDEV generic ; cd -
chroot # apt-setup # set-up /etc/apt/sources.list
chroot # vi /etc/apt/sources.list # point the source to unstable

It give’s me a total debian Sid system with only base packages.

main # echo "8:23:respawn:/usr/sbin/chroot /sid-root "  "/sbin/getty 38400 tty8"  >> /etc/inittab
main # init q    # reload init

It makes the login system in tty8 (no need to chroot everytime)

main # cp /etc/X11/XF86Config-4 /sid-root/etc/X11/XF86Config-4
main # chroot /sid-root # or use chroot console
chroot # cd /dev; /sbin/MAKEDEV generic ; cd -
chroot # apt-get install gdm gnome x-window-system
chroot # vi /etc/gdm/gdm.conf # do s/vt7/vt9/ in [servers] section
chroot # /etc/init.d/gdm start

Now, my system is ready to work with Debian Sid with Graphical manager.

Source: http://www.debian.org/doc/manuals/reference/ch-tips.en.html#s-chroot

So now 2 linux distribution is runing at time. Debian Sarge on tty7 and Debian Sid on tty9

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Here i got Gnome 2.12 , let’s check how is this

tanha:/# uname -a
Linux tanha 2.6.8-2-686-smp #1 SMP Tue Aug 16 12:08:30 UTC 2005 i686 GNU/Linux

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Let’s see, how much time it will take, I need to download 600 MB with 6 KB bandwidth.

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