Install Xen hypervison

You'll need to install a bunch of packages required to compile Xen from source:

gcc
make
binutils
zlib-devel
python-devel
openssl-devel
xorg-x11-server-devel
iproute
udev OR hotplug
dev86
mercurial
iasl
gettext-kde (for Ubuntu machines)
bridge-utils 

download http://bits.xensource.com/oss-xen/release/4.2.1/xen-4.2.1.tar.gz 

$ tar xzf xen-4.1.0.tar.gz
$ cd xen-4.1.0
$ make xen && make tools
# make install-xen && make install-tools

Cloud

Cloud Frame Work
1. Cloud Stack
2. Open Nebula
3. Open Stack

Reinstall mysql with PDO in ubuntu 12

apt-get --purge remove apache2 apache2-mpm-prefork apache2-utils apache2.2-common libapache2-mod-php5 libapr1 libaprutil1 libdbd-mysql-perl libdbi-perl libmysqlclient15off libnet-daemon-perl libplrpc-perl libpq5 mysql-client-5.0 mysql-common mysql-server mysql-server-5.0 php5-common php5-mysql 

tasksel install lamp-server

apt-get install phpmyadmin

Install virtualbox on redhat 5.5

# wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc
# rpm --import oracle_vbox.asc
# vi /etc/yum.repos.d/virtualbox.repo

[virtualbox]
name=Oracle Linux / RHEL / CentOS-$releasever / $basearch - VirtualBox
baseurl=http://download.virtualbox.org/virtualbox/rpm/el/$releasever/$basearch
enabled=1
gpgcheck=1
gpgkey=http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc

 

# yum install VirtualBox-4.2

Reinstall Setting up lamp server on ubuntu 12

-remove LAMP

apache2 apache2-mpm-prefork apache2-utils apache2.2-common libapache2-mod-php5 libapr1 libaprutil1 libdbd-mysql-perl libdbi-perl libnet-daemon-perl libplrpc-perl libpq5 mysql-client-5.5 mysql-common mysql-server mysql-server-5.5 php5-common php5-mysql

-remove mySQL

mysql-client-core-5.5 mysql-server-core-5.5

apt-get remove mysql*

or

sudo apt-get purge apache2
sudo apt-get purge php5
sudo apt-get purge mysql-server
sudo apt-get clean
sudo apt-get autoremove
sudo apt-get install apache2 php5 mysql-server

start reinstall

sudo apt-get install apache2
Open a web browser and navigate to http://localhost/. You should see a message saying It works!
sudo apt-get install mysql-server
sudo /etc/init.d/apache2 restart
sudo apt-get install php5 libapache2-mod-php5
sudo /etc/init.d/apache2 restart
sudo gedit /var/www/testphp.php
<?php phpinfo(); ?>
sudo rm /var/www/testphp.php       

change fedora ip adress

You can determine your IP by running:

/sbin/ifconfig -a

Look at the entry for eth0

To change your IP edit the file /etc/sysconfig/network-scripts/ifcfg-eth0

then run

/etc/init.d/network restart

array to mysql statement

$friendsArray = array("zac1987", "peter", "micellelimmeizheng1152013142");
$friendsArray2 = '"' . implode('","', $friendsArray) . '"';
$query120 = "SELECT picturemedium FROM users WHERE username IN ($friendsArray2)";
echo $query120;