This is a script to install common utilities on a (K)Ubuntu machine just after installed the OS (Tested on Elementary OS)

ubuntu-post-install.sh

#!/bin/bash
Author="Carlo Lobrano"
Email="bytefalls@gmail.com"
Version="2.2"
Date="2014-05-25"
Project="Ubuntu-derived OS post install script"

# Changelog
# 2014-06-07 Added indicator-cpufreq to eos (remember to copy the icons)
# 2014-05-25 Separated package installation from ppa add.

#========================================================
# List of packages to be checked for installation. 
#========================================================
# Packages list that starts with a distro name (EOS is for ElementaryOS), are specific for
# the distribution (EOS will install also Ubuntu packages). 

# OTHER_PACKAGES is a list of applications indipendent from distribution, a part from the
# fact that must be a Debian derivate (as for the rest of this script to work, btw).
# This is the list you should modify the most if you like to add, remove or replace packages
# you want.

# The SPECIAL_PKGS list contains applications or scripts that need a special 
# function to be installed, that is, they cannot be installed through a simply
# apt-get install. Let's that list unchanged

# I have a Vaio notebook, this is why I added a NOTEBOOK_PGKS that apply to Vaio notebooks only.

PPAs="ppa:versable/elementary-update ppa:fsvh/pacifica-icon-theme ppa:elementary-os/unstable-upstream \
    ppa:vaiofand/ppa ppa:vaiopower/ppa"

UBUNTU_PKGS="ubuntu-restricted-extras ttf-ubuntu-font-family"

EOS_PKGS="elementary-tweaks indicator-synapse \
	  indicator-cpufreq \
	  elementary-colors-theme elementary-lion-theme elementary-elfaenza-icons"

KUBUNTU_PKGS="kubuntu-restricted-extras"			

OTHER_PGKS="openjdk-7-jre icedtea-7-plugin openjdk-7-jdk \
			chromium-browser chromium-codecs-ffmpeg-extra firefox \
			gnome-system-monitor locate konsole recoll baobab git dropbox \
			zip tar gparted psensor baobab tree"

SPECIAL_PKGS="flashplugin_midory libdvdread4_installer conky_installer"

NOTEBOOK_PKGS="vaiopower vaiofand"


#========================================================
# GLOBALS
#========================================================

TO_INSTALL=""

#========================================================
# FUNCTIONS
#========================================================

## Logging
log(){
	echo "[+]" $@
}

err(){
	echo "[ERROR]" $@
}

milestone(){
	echo ""
	log "==================================="
	log $@
	log "==================================="
	echo ""
}

fatal(){
	echo "[FATAL]" $@
	exit 1
}



## Utilities

check_distro(){
	DISTRO=$(lsb_release -si)
	ARCH=$(uname -m | sed 's/x86_//;s/i[3-6]86/32/')
	VER=$(lsb_release -sr)	

	log "Detected \"$DISTRO $VER $ARCH bits\". Is that right?"
	select choice in "yes, continue" "no, exit"; do
		case $choice in
			"yes, continue")
				break
				;;
			"no, exit")
				exit 0
				;;
		esac	
	done
}

__set_to_install(){
	local package=$1
	log "${package} not found. Install it?"
	select choice in "yes" "no"; do
		case $choice in
			"yes")
				TO_INSTALL="${TO_INSTALL} ${package}"
				break
				;;
			"no")
				log "${package} won't be installed"
				break
				;;
			?)
				fatal "Wrong choice"
				break
				;;
		esac
	done

	log ${TO_INSTALL}
}


__set_to_add(){
	local ppa=$1
	log "Add $ppa?"
	select choice in "yes" "no"; do
		case $choice in
			"yes")
				TO_ADD="${TO_ADD} ${ppa}"
				break
				;;
			"no")
				log "${ppa} won't be added"
				break
				;;
			?)
				fatal "Wrong choice"
				break
				;;
		esac
	done

	log ${add}
}

__check_package(){
	local package=$1
	[[ `dpkg -l | grep -i ${package} ` ]]
}

__check_and_install(){
	local package=$1
	__check_package ${package} || sudo apt-get install -y ${package}
}

#========================================================
# INSTALLERS
#========================================================

elementary_ppa(){
	milestone "Adding some Elementary PPA"

	log "Adding Elementary Tweaks PPA..."
	sudo apt-add-repository ppa:versable/elementary-update

	log "Adding Pacifica icon theme PPA..."
	sudo add-apt-repository ppa:fsvh/pacifica-icon-theme

	log "Adding Synapse indicator (search through files) PPA..."
	sudo add-apt-repository ppa:elementary-os/unstable-upstream	
}


vaio_ppa(){
	log "Adding vaiopower fan PPA..."
	sudo add-apt-repository ppa:vaiofand/ppa

	log "Adding vaiopower power management PPA..."
	sudo add-apt-repository ppa:vaiopower/ppa
}


libdvdread4_installer(){
	log "Installing libdvdread4..."
	__check_and_install libdvdread4
	sudo /usr/share/doc/libdvdread4/install-css.sh
}

flashplugin_midory(){
	log "Setup flasplugin for midori"
	__check_and_install flashplugin-installer &&
	__check_and_install nspluginwrapper
	
	set -x
	sudo ln -s /usr/lib/mozilla/plugins/flashplugin-alternative.so /usr/lib/mozilla/plugins/libflashplayer.so	
	nspluginwrapper -v -a -n -i
	set +x
}

conky_installer(){
	log "Adding conky"
	__check_and_install conky-all
	__check_and_install git
	git clone https://gist.github.com/ba148c621ee0e7afee65.git /tmp/conkyfolder || err "Could not clone repository for conky"
	mv /tmp/conkyfolder/conkyrc ~/.conkyrc || err "Could not create conkyrc"
}


#========================================================
# MAIN
#========================================================

milestone "$Project"

log "Author:${Author} - E-mail:$Email - Version:${Version} - Date:${Date}"


check_distro

PACKAGES=""
case $DISTRO in
	"ubuntu")
		PACKAGES="${PACKAGES} ${UBUNTU_PKGS}"
		;;
	"kbuntu")
		PACKAGES="${PACKAGES} ${KUBUNTU_PKGS}"
		;;
	"elementary OS")
		PACKAGES="${PACKAGES} ${UBUNTU_PKGS} ${EOS_PKGS}"
		;;
esac



milestone "Do you want to upgrade now?"
select choice in yes no; do
	case $choice in
		yes)
            sudo apt-get update
			sudo apt-get upgrade
			break
			;;			
		no)
			log "Skip upgrade"
			break
			;;
		?)
			err "Wrong choice"
			;;
	esac
done


PACKAGES="${PACKAGES} ${OTHER_PGKS} ${NOTEBOOK_PKGS}"


milestone "Check PPAs to be added"
for ppa in ${PPAs}; do		
	__set_to_add ${ppa}
done

   
if [[ ! ${TO_ADD} = "" ]]; then
    milestone "Adding the following PPAs: ${TO_ADD}. Press ENTER to continue..."
    read
    for ppa in ${TO_ADD}; do
	    sudo add-apt-repository  ${ppa}
    done    
fi

milestone "Check packages to be installed"
for package in ${PACKAGES}; do		
	__check_package ${package} && log "${package} already installed" || __set_to_install ${package}
done



if [[ ${TO_INSTALL} = "" ]]; then
    milestone "All packages already installed."
else
    milestone "Following packages will be installed: ${TO_INSTALL}. Press ENTER to continue..."
    read

    for package in ${TO_INSTALL}; do
	    sudo apt-get install -y ${package}
    done
fi


if [[ ! ${SPECIAL_PKGS} = "" ]]; then
    milestone "Running the following installer: ${SPECIAL_PKGS}. Press ENTER to continue..."
    read

    for installer in ${SPECIAL_PKGS}; do
        $installer
    done
fi

milestone "Update completed!"