Install: gentoo helper scripts

helper_scripts/gentoo_setup.sh

+#!/bin/bash
+# Copyright (c) 2009, Scott Barr <gsbarr@gmail.com>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#    * Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright
+#      notice, this list of conditions and the following disclaimer in the
+#      documentation and/or other materials provided with the distribution.
+#    * Neither the name of the <organization> nor the
+#      names of its contributors may be used to endorse or promote products
+#      derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS''
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
+# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Global vars
+install_mail="no"
+install_web="no"
+install_ftp="no"
+install_dns="no"
+spinner_pid=0
+version="0.6"
+
+source_path=`dirname $0`
+source ${source_path}/utils.sh
+
+function package_has_use_flag()
+{
+        local package=$1
+        local useflag=$2
+
+        res=`equery -C -N uses $package | grep -o -E "^[ +-]+$useflag" | grep "+"`
+        [ -n "$res" ]
+}
+
+function is_package_installed()
+{
+        local usechange="no"
+        local uselist=""
+
+        installed=`equery -C -N list -e -i $1 | grep $1 | grep "^\[I"`
+
+        if [ -n "$2" ] # Use flags parsed
+        then
+                for useflag in $2
+                do
+                        uselist="$uselist +$2"
+
+                        # If the use flag isn't currently set or wasn't enabled when installed we'll need to re-install it.
+                        package_has_use_flag "$1" "$useflag" || usechange="yes"
+                done
+
+                flagedit $1 $uselist
+        fi
+
+        [ -n "$installed" ] && [ "$usechange" == "no" ]
+}
+
+function install_progress()
+{
+	SP_STRING="/-\\|"
+	packages=( $2 )
+	
+	IP_STRING=`printf "1 of %d" "${#packages[@]}"`
+	loop_count=0
+	nowf=`date +'%b %d, %Y %H:%M'`
+	
+	while [ -d /proc/$1 ] && [ -d /proc/$$ ]
+	do 
+		printf "\e[1;37m\e7[ %1.1s %s ] \e8\e[0m" "$SP_STRING" "$IP_STRING"
+		sleep 0.2
+		
+		if [ $loop_count -lt 8 ]
+		then
+			loop_count=$(($loop_count+1))
+		else
+			current=`sed -n "/Started emerge on: $nowf/,/G/p" /var/log/emerge.log | grep ">>> emerge" | tail -1 | grep -m 1 -o -P "\d+ of \d+"`
+			if [ -n "$current" ]
+			then
+				IP_STRING=$current
+			fi
+			loop_count=0
+		fi
+		
+		SP_STRING=${SP_STRING#"${SP_STRING%?}"}${SP_STRING%?};
+	done
+	
+	printf "%-15s" " "
+}
+
+function install_packages()
+{
+	local package_list=$1
+	local title=$2
+	
+	if [ -z "$title" ]
+	then
+		title="Installing packages"
+	fi
+	
+	if [ -n "$package_list" ]
+	then
+		echo -e "The following packages are going to be emerged:"
+		echo -e "$package_list"
+		echo -e ""
+		countdown "00:00:10" Continue in
+		
+		echo -e ""
+		
+		printf "%-40s" "$title"	
+		
+		(emerge $package_list >/dev/null 2>&1) &
+		pid=$!
+		
+		install_progress $pid "$package_list"
+		wait $pid
+		status=$?
+		
+		if [ $status -eq 0 ];
+	    then
+		   echo -e "\e[1;37m[ \e[0m\e[1;32mok\e[0m\e[1;37m ]    \e[0m"
+	    else
+		   echo -e "\e[1;37m[ \e[0m\e[1;31mfailed\e[0m\e[1;37m ]    \e[0m"
+		   echo -e "Failed installing the following packages:"
+		   echo -e "$1"
+		   exit 1
+	    fi
+	else
+		echo -e "No packages to install!"
+	fi
+}
+
+function install_rcscripts()
+{
+	if [ -n "$1" ]
+	then
+		printf "\e[1;37m%-40s\e[0m" "Adding packages to default runlevel"
+		start_spinner
+
+		for rc in $1
+		do
+			rc-update add $rc default &> /dev/null
+		done
+		
+		stop_spinner
+		echo -e "\e[1;37m[ \e[0m\e[1;32mdone\e[0m\e[1;37m ]\e[0m"
+	fi
+}
+
+function meta_mail()
+{
+	local package_list=""
+	local add_maildrop=""
+	local remove_ssmtp="no"
+	local rc_scripts=""
+	
+	echo -e ""
+	printf "\e[1;37m%-40s\e[0m" "Building list of required mail packages"
+	
+	start_spinner
+	
+	is_package_installed "net-libs/courier-authlib" "mysql" || { package_list="$package_list net-libs/courier-authlib"; rc_scripts="$rc_scripts courier-authlib"; }
+	
+	is_package_installed "net-mail/courier-imap" "fam" || { package_list="$package_list net-mail/courier-imap"; rc_scripts="$rc_scripts courier-imapd courier-imapd-ssl courier-pop3d courier-pop3d-ssl"; }
+	
+	is_package_installed "mail-filter/maildrop" || add_maildrop="yes" # Avoid file collision warnings from emerge
+	
+	if ! is_package_installed "mail-mta/postfix" "mysql sasl"
+	then
+		is_package_installed "mail-mta/ssmtp" && local remove_ssmtp="yes"; # Ssmtp blocks postfix and is installed by default.
+		package_list="$package_list mail-mta/postfix"
+		rc_scripts="$rc_scripts postfix"
+	fi
+	
+	is_package_installed "dev-libs/cyrus-sasl" "mysql" || { package_list="$package_list dev-libs/cyrus-sasl"; rc_scripts="$rc_scripts saslauthd"; }
+	
+	is_package_installed "net-mail/getmail" || package_list="$package_list net-mail/getmail"
+	
+	is_package_installed "mail-filter/amavisd-new" "mysql razor spamassassin" || { package_list="$package_list mail-filter/amavisd-new"; rc_scripts="$rc_scripts amavisd"; }
+	
+	is_package_installed "app-antivirus/clamav" || { package_list="$package_list app-antivirus/clamav"; rc_scripts="$rc_scripts clamd"; }
+	
+	is_package_installed "dev-perl/Authen-SASL" || package_list="$package_list dev-perl/Authen-SASL"
+	
+	is_package_installed "dev-perl/perl-ldap" || package_list="$package_list dev-perl/perl-ldap"
+	
+	stop_spinner
+	echo -e "\e[1;37m[ \e[0m\e[1;32mdone\e[0m\e[1;37m ]\e[0m"
+	
+	if [ "$remove_ssmtp" == "yes" ]
+	then
+		exec_command "emerge --unmerge mail-mta/ssmtp" "Removing ssmtp to install postfix"
+	fi
+	
+	install_packages "$package_list" "Installing mail packages"
+	
+	if [ -n "$add_maildrop" ]
+	then
+		exec_command "COLLISION_IGNORE=\"/usr\" emerge mail-filter/maildrop" "Installing maildrop"
+	fi
+	
+	install_rcscripts "$rc_scripts"
+}
+
+function meta_web()
+{
+	local package_list=""
+	local fix_jailkit="no"
+	local linguas_add="no"
+	local webmail_add="no"
+	local rc_scripts=""
+	
+	echo -e ""
+	printf "\e[1;37m%-40s\e[0m" "Building list of required web packages"
+	
+	start_spinner
+	
+	is_package_installed "www-servers/apache" "ssl suexec doc" || { package_list="$package_list www-servers/apache"; rc_scripts="$rc_scripts apache2"; }
+	
+	is_package_installed "www-apache/mod_fcgid" || package_list="$package_list www-apache/mod_fcgid"
+	
+	if ! is_package_installed "app-admin/webalizer" "vhosts apache2"
+	then
+	
+		is_package_installed "media-libs/gd" "jpeg png" || package_list="$package_list media-libs/gd"
+		
+		if package_has_use_flag "app-admin/webalizer" "nls"
+		then
+			source /etc/make.conf
+			if [ -z "${LINGUAS}" ]
+			then
+				linguas_add="yes"
+			fi
+		fi
+	
+		package_list="$package_list app-admin/webalizer"
+	fi
+	
+	if is_package_installed "app-admin/vlogger"
+	then
+		# Check if package is masked
+		if [ -n "$(equery -C -N list -I -o -e app-admin/vlogger | grep app-admin/vlogger | awk '{print $2}' | grep '^\[M')" ]
+		then
+			flagedit app-admin/vlogger -- +~amd64 +~x86 > /dev/null
+		fi
+		
+		package_list="$package_list app-admin/vlogger"
+	fi
+	
+	is_package_installed "app-crypt/mcrypt" || package_list="$package_list app-crypt/mcrypt"
+	
+	is_package_installed "dev-lang/php" "apache2 gd mysql mysqli imap cli cgi pcre xml zlib crypt ctype session unicode mhash ftp" || package_list="$package_list dev-lang/php"
+	
+	if ! is_package_installed "www-apache/mod_suphp"
+	then
+		# Check if package is masked
+		if [ -n "$(equery -C -N list -I -p -e www-apache/mod_suphp | grep www-apache/mod_suphp | awk '{print $2}' | grep '^\[M')" ]
+		then
+			flagedit www-apache/mod_suphp -- +~amd64 +~x86 > /dev/null
+		fi
+		
+		package_list="$package_list www-apache/mod_suphp"
+	fi
+	
+	is_package_installed "dev-db/phpmyadmin" || package_list="$package_list dev-db/phpmyadmin"
+	
+	is_package_installed "media-gfx/imagemagick" "jpeg png tiff" || package_list="$package_list media-gfx/imagemagick"
+	
+	is_package_installed "dev-php/PEAR-PEAR" || package_list="$package_list dev-php/PEAR-PEAR"
+	
+	is_package_installed "dev-php/PEAR-Auth" || package_list="$package_list dev-php/PEAR-Auth"
+	
+	is_package_installed "dev-php5/pecl-imagick" || package_list="$package_list dev-php5/pecl-imagick"
+	
+	is_package_installed "sys-auth/pam_mysql" || package_list="$package_list sys-auth/pam_mysql"
+	
+	if ! is_package_installed "app-admin/jailkit"
+	then
+		# Check if package is masked
+		if [ -n "$(equery -C -N list -I -o -e app-admin/jailkit | grep app-admin/jailkit | awk '{print $2}' | grep '^\[M')" ]
+		then
+			flagedit app-admin/jailkit -- +~amd64 +~x86 > /dev/null
+		fi
+		
+		# The ebuild for jailkit 2.3 has a nasty bug that breaks the login shell. Check for version and
+		# apply the fix if necessary.
+		if [ "$(emerge -pv app-admin/jailkit | grep -o -P '(?<=jailkit-)[\d-.rp_]+')" == "2.3" ]
+		then
+			fix_jailkit="yes"
+			cp /etc/shells /etc/shells~
+		fi
+		
+		package_list="$package_list app-admin/jailkit"
+	fi
+	
+	if [ "$install_mail" == "yes" ] && ! is_package_installed "mail-client/squirrelmail" "vhosts"
+	then
+		if ! is_package_installed "app-admin/webapp-config"
+		then
+			package_list="$package_list app-admin/webapp-config"
+		fi
+		
+		webmail_add="yes"
+		package_list="$package_list mail-client/squirrelmail"
+	fi
+	
+	stop_spinner
+	echo -e "\e[1;37m[ \e[0m\e[1;32mdone\e[0m\e[1;37m ]\e[0m"
+	
+	if [ "$linguas_add" == "yes" ]
+	then
+		echo -e ""
+		echo -e "The nls use flag is enabled for webalizer and no locale preference is set in make.conf. If "
+		echo -e "not set webalizer will fail to install."
+		echo -e ""
+		
+		accept_locales=`find /usr/share/locale/ -maxdepth 1 -type d -exec basename '{}' \; | grep -v "locale" | sort | tr "\n" "/" | sed -e 's,\(.\)/$,\1,'`
+		valid_input "Set locale value for gettext-based programs to: " "$accept_locales" "en"
+		
+		echo "LINGUAS=\"$Return_Val\"" >> /etc/make.conf
+		echo -e ""
+	fi
+	
+	install_packages "$package_list" "Installing web packages"
+	
+	if [ $? -eq 0 ] && [ "$fix_jailkit" == "yes" ] && [ -z "$(grep 'jk_chrootsh' /etc/shells)" ]
+	then
+		cp /etc/shells /etc/shells.jailkit-v2.3
+		cp /etc/shells~ /etc/shells
+		echo "/usr/sbin/jk_chrootsh" >> /etc/shells
+	fi
+	
+	if [ "$webmail_add" == "yes" ]
+	then
+		exec_command "webapp-config -I -h localhost -u apache -d /webmail squirrelmail $(ls -r /usr/share/webapps/squirrelmail/ | awk '{print $1}')" "Adding squirrelmail to localhost"
+	fi
+	
+	install_rcscripts "$rc_scripts"
+}
+
+function meta_ftp()
+{
+	local package_list=""
+	local rc_scripts=""
+	
+	echo -e ""
+	printf "\e[1;37m%-40s\e[0m" "Building list of required ftp packages"
+	
+	start_spinner
+	
+	is_package_installed "net-ftp/pure-ftpd" "mysql" || { package_list="$package_list net-ftp/pure-ftpd"; rc_scripts="$rc_scripts pure-ftpd"; }
+	
+	is_package_installed "sys-fs/quota" || package_list="$package_list sys-fs/quota";
+	
+	if ! is_package_installed "sys-fs/quotatool"
+	then
+		# Check if package is masked
+		if [ -n "$(equery -C -N list -I -p -e sys-fs/quotatool | grep sys-fs/quotatool | awk '{print $2}' | grep '^\[M')" ]
+		then
+			flagedit sys-fs/quotatool -- +~amd64 +~x86 > /dev/null
+		fi
+	
+		package_list="$package_list sys-fs/quotatool"
+	fi
+	
+	stop_spinner
+	echo -e "\e[1;37m[ \e[0m\e[1;32mdone\e[0m\e[1;37m ]\e[0m"
+	
+	if [ $(expr match "$package_list" 'sys-fs/quota') -ne 0 ]
+	then
+		echo -e ""
+		echo -e "\e[1;33mNotice:\e[0m Don't forget to edit your fstab file and add the usrquota & grpquota options to your data partition."
+		echo -e ""
+		sleep 2
+	fi
+	
+	install_packages "$package_list" "Installing ftp packages"
+	
+	install_rcscripts "$rc_scripts"
+}
+
+function meta_dns()
+{
+	local package_list=""
+	
+	echo -e ""
+	echo -e "\e[1;37mBuilding list of required dns packages\e[0m\n"
+	
+	start_spinner
+	
+	is_package_installed "net-dns/pdns" "mysql" || package_list="$package_list net-dns/pdns"
+	
+	stop_spinner
+	echo -e "\e[1;37m[ \e[0m\e[1;32mdone\e[0m\e[1;37m ]\e[0m"
+	
+	install_packages "$package_list" "Installing dns packages"
+}
+
+function meta_all()
+{
+	meta_mail
+	meta_web
+	meta_ftp
+	meta_dns
+}
+
+case $1 in
+	"--version"|"-h"|"--help")
+		echo -e "Gentoo Linux ISPConfig setup script"
+		echo -e "Version $version"
+		echo -e ""
+		echo -e "No arguments needed, simply execute the script."
+		exit 0
+		;;
+	*)
+		;;
+esac
+
+clear
+
+echo -e "\e[1;33mGentoo Linux ISPConfig setup script v$version\e[0m"
+echo -e "\e[1;32m========================================\e[0m"
+echo -e ""
+
+sleep 0.5
+
+valid_input "Would you like to sync portage now?" 
+if [ "$Return_Val" = "yes" ]
+then
+	exec_command "emerge --sync --quiet" "Updating portage tree"
+fi
+
+# Get all the programs we need to do portage queries etc.
+echo -en "\e[1;37mChecking for required packages\e[0m\n"
+
+# Verify if gentoolkit has been emerged and install if not
+which equery &> /dev/null
+if [ $? -ne 0 ]
+then
+	exec_command "emerge app-portage/gentoolkit" "Installing gentoolkit"
+fi
+
+which flagedit &> /dev/null
+if [ $? -ne 0 ]
+then
+	exec_command "emerge app-portage/flagedit" "Installing flagedit"
+fi
+
+if ! is_package_installed "app-admin/rsyslog"
+then
+	printf "\e[1;37m%-40s\e[0m" "Checking for installed system loggers"
+	start_spinner
+
+	loggers=( syslog-ng metalog sysklogd  )
+	clogger=""
+	rsyslog_install="yes"
+
+	for logger in $loggers
+	do
+		if ! is_package_installed "app-admin/$logger" && [ -n "$(rc-config list default | grep $logger)" ]
+		then
+			clogger=$logger
+			break
+		fi
+	done
+
+	stop_spinner
+	echo -e "\e[1;37m[ \e[0m\e[1;32mdone\e[0m\e[1;37m ]\e[0m"
+
+	if [ "$clogger" != "" ]
+	then
+		echo -e ""
+		echo -e "$clogger appears to be installed on your system."
+		echo -e "To use the log monitoring features in ISPConfig"
+		echo -e "the log facilities need to be configured to certain"
+		echo -e "paths. Currently the default rsyslog file is used."
+		echo -e ""
+		
+		valid_input "Would you like to replace $clogger with rsyslog?"
+		if [ "$Return_Val" = "yes" ]
+		then
+			echo -e ""
+			exec_command "/etc/init.d/syslog-ng stop" "Stopping $clogger"
+			exec_command "rc-update del $clogger default" "Remove $clogger from default runlevel"
+		else
+			rsyslog_install="no"
+		fi
+
+	fi
+
+	if [ "$rsyslog_install" == "yes" ]
+	then
+		exec_command "emerge app-admin/rsyslog" "Installing rsyslog"
+		exec_command "/etc/init.d/rsyslog start" "Starting rsyslog"
+		exec_command "rc-update add mysql default" "Add rsyslog to default runlevel"
+	fi
+	
+	echo -e ""
+	
+fi
+
+if ! is_package_installed "dev-db/mysql" "extraengine big-tables"
+then
+	exec_command "emerge dev-db/mysql" "Installing MySql"
+	exec_command "mysql_install_db"	"Set-up mysql grant tables"
+	exec_command "/etc/init.d/mysql start" "Starting MySql"
+	exec_command "rc-update add mysql default" "Add MySql to default runlevel"
+fi
+
+which vim &> /dev/null
+if [ $? -ne 0 ]
+then
+	exec_command "emerge app-editors/vim" "Installing vim"
+fi
+
+is_package_installed "sys-devel/binutils" || exec_command "emerge sys-devel/binutils" "Installing binutils";
+is_package_installed "app-forensics/rkhunter" || exec_command "emerge app-forensics/rkhunter" "Installing rkhunter";
+is_package_installed "net-analyzer/fail2ban" || exec_command "emerge net-analyzer/fail2ban" "Installing fail2ban";
+is_package_installed "app-portage/layman" "subversion" || exec_command "emerge app-portage/layman" "Installing layman";
+
+# Check if sunrise overlay has been enabled
+if [ -z "$(layman -l | grep sunrise)" ]
+then
+	layman -q -S > /dev/null
+	exec_command "layman -a sunrise" "Adding/syncing package overlay"
+fi
+
+if [ -z "$(grep 'local/portage/layman' /etc/make.conf)" ]
+then
+	echo "source /usr/local/portage/layman/make.conf" >> /etc/make.conf
+fi
+
+echo -e ""
+
+# Service based packages
+echo -en "\e[1;37mService based packages\e[0m\n"
+
+valid_input "Install all packages or select targeted services?" "all/targeted"
+
+if [ "$Return_Val" = "all" ]
+then
+	install_mail="yes"
+	install_web="yes"
+	install_ftp="yes"
+	install_dns="yes"
+	meta_all
+else
+	valid_input "Install mail related packages?"
+	install_mail=$Return_Val
+	if [ "$install_mail" = "yes" ]
+	then
+		meta_mail
+	fi
+	
+	echo -e ""
+	valid_input "Install web related packages?"
+	install_web=$Return_Val
+	if [ "$install_web" = "yes" ]
+	then
+		meta_web
+	fi
+	
+	echo -e ""
+	valid_input "Install ftp related packages?"
+	install_ftp=$Return_Val
+	if [ "$install_ftp" = "yes" ]
+	then
+		meta_ftp
+	fi
+	
+	echo -e ""
+	valid_input "Install dns related packages?"
+	install_dns=$Return_Val
+	if [ "$install_dns" = "yes" ]
+	then
+		meta_dns
+	fi
+fi
+
+echo -e ""
+echo -e "\e[1;33mSetup script completed\e[0m"
+echo -e "\e[1;32m========================================\e[0m"
+echo -e ""
+
+valid_input "Do you want to start the ISPConfig installer?"
+if [ "$Return_Val" = "yes" ]
+then
+	clear
+	php -q ../install/install.php
+fi
+
+exit $?

helper_scripts/utils.sh

+#!/bin/bash
+# Copyright (c) 2009, Scott Barr <gsbarr@gmail.com>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#    * Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright
+#      notice, this list of conditions and the following disclaimer in the
+#      documentation and/or other materials provided with the distribution.
+#    * Neither the name of the <organization> nor the
+#      names of its contributors may be used to endorse or promote products
+#      derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS''
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
+# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+function countdown
+{
+	local OLD_IFS="${IFS}"
+	IFS=":"
+	local ARR=( $1 ) ; shift
+	IFS="${OLD_IFS}"
+	local PREFIX="$*" ; [ -n "${PREFIX}" ] && PREFIX="${PREFIX}"
+	local SECONDS=$((  (ARR[0] * 60 * 60) + (ARR[1] * 60) + ARR[2]  ))
+	local START=$(date +%s)
+	local END=$((START + SECONDS))
+	local CUR=$START
+
+	while [[ $CUR -lt $END ]]
+	do
+			CUR=$(date +%s)
+			LEFT=$((END-CUR))
+
+			printf "\r${PREFIX} %02d" \
+					$((LEFT%60))
+
+			sleep 1
+	done
+
+	echo "        "
+}
+
+function outputVar()
+{
+  y=\$"$1"
+  x=`eval "expr \"$y\" "`
+  eval "$1=\"$2\""
+}
+
+function valid_input()
+{
+  local correct="no"
+  Return_Val=""
+
+  if [ -z "$2" ]
+  then
+	local opts=( yes no )
+	local opt_list="yes/no"
+  else
+	local opts=( `echo $2 | tr "/" " "` )
+	local opt_list=$2
+  fi
+  
+  while [ "$correct" != "yes" ]
+  do
+        if [ -n "$3" ]
+        then
+			line_prompt="$1 [default: $3] "
+        else
+			line_prompt="$1 [$opt_list] "
+		fi
+        
+        echo -en "$line_prompt"
+        read answer
+		
+		if [ -n "$3" ]
+		then
+			answer=$3
+		else
+			ret=`echo "${opts[@]}" | grep -w "$answer"`
+		fi
+		
+		if [ $? -eq 0 ]
+		then
+			correct="yes"
+			Return_Val=$answer
+		fi
+  done
+}
+
+function start_spinner()
+{
+  parent_pid=$$
+  (SP_STRING="/-\\|"; while [ -d /proc/$1 ] && [ -d /proc/$parent_pid ]; do printf "\e[1;37m\e7[ %1.1s ]  \e8\e[0m" "$SP_STRING"; sleep .2; SP_STRING=${SP_STRING#"${SP_STRING%?}"}${SP_STRING%?}; done) &
+  disown
+  spinner_pid=$!
+}
+
+function stop_spinner()
+{
+   if [ $spinner_pid -gt 0 ]
+   then
+    kill -HUP $spinner_pid 2>/dev/null
+   fi
+}
+
+function exec_command()
+{
+   printf "%-40s" "$2"
+   
+   (eval $1 >/dev/null 2>&1) &
+   pid=$!
+   
+   start_spinner
+   wait $pid
+   status=$?
+   stop_spinner
+   
+   if [ $status -eq 0 ];
+   then
+       echo -e "\e[1;37m[ \e[0m\e[1;32mok\e[0m\e[1;37m ]\e[0m"
+   else
+       echo -e "\e[1;37m[ \e[0m\e[1;31mfailed\e[0m\e[1;37m ]\e[0m"
+	   echo -e "The following command did not complete successfully:"
+	   echo -e "$1"
+	   exit 1
+   fi
+}