diff --git a/lib/general b/lib/general
index 0b7c0af..71e3859 100644
--- a/lib/general
+++ b/lib/general
@@ -116,16 +116,16 @@ check_osname() {
 
 
 pre_install() {
-	sudo apt-get -qq update
+	sudo apt -qq update
 	if [[ $(conf_read pre-packs) != true ]]; then
 		# Check for missing essential packages
 		api-events_update i1
-		sudo apt-get -y -qq install dialog
-		sudo apt-get -y -qq install software-properties-common
-		[[ $(check_osname) != "bionic" ]] && sudo apt-get -y -qq install python-software-properties
-		sudo apt-get -y -qq install pwgen
-		sudo apt-get -y -qq install unzip
-		sudo apt-get -y -qq install zip
+		sudo apt -y -qq install dialog
+		sudo apt -y -qq install software-properties-common
+		[[ $(check_osname) != "bionic" ]] && sudo apt -y -qq install python-software-properties
+		sudo apt -y -qq install pwgen
+		sudo apt -y -qq install unzip
+		sudo apt -y -qq install zip
 		conf_write pre-packs true
 		api-events_update i2
 	fi
@@ -147,7 +147,7 @@ mysql_client_install() {
 		;;
 	esac
 	pre_install
-	sudo apt-get -y install mariadb-client
+	sudo apt -y install mariadb-client
 	conf_write mysql-client true
 	echo "${gre}MySQL Client has been successfully installed!${end}"
 	api-events_update im3
diff --git a/lib/install b/lib/install
index bcc1687..49b0deb 100644
--- a/lib/install
+++ b/lib/install
@@ -3,7 +3,7 @@ source /opt/webinoly/lib/general
 
 
 app_version() { 
-	local app_ver="1.6.1"
+	local app_ver="1.6.2"
 	echo $app_ver
 }
 svr_version() { 
@@ -189,7 +189,7 @@ nginx_install() {
 		conf_write nginx-ppa stable
 	fi
 	pre_install
-	sudo apt-get -y install nginx
+	sudo apt -y install nginx
 
 	if [[ $(conf_read login-www-data) == "true" ]]; then
 		sudo chown -R www-data:www-data /var/www
@@ -228,19 +228,19 @@ php_install() {
 	pre_install
 	if [[ $(conf_read php) != "true" ]]; then
 		# Fix ondrej issue - https://github.com/oerdnj/deb.sury.org/issues/56
-		sudo apt-get install -y language-pack-en-base
+		sudo apt install -y language-pack-en-base
 		sudo LC_ALL=C.UTF-8 add-apt-repository -y ppa:ondrej/php
 	fi
 	pre_install
-	sudo apt-get -y install php${ver}-common php${ver}-cli php${ver}-fpm php${ver}-curl php${ver}-gd php${ver}-imap php${ver}-readline php${ver}-recode php${ver}-mysql php${ver}-mbstring php${ver}-bcmath php${ver}-mysql php${ver}-opcache php${ver}-zip php${ver}-xml php${ver}-soap php-imagick graphviz php-pear php-msgpack
+	sudo apt -y install php${ver}-common php${ver}-cli php${ver}-fpm php${ver}-curl php${ver}-gd php${ver}-imap php${ver}-readline php${ver}-recode php${ver}-mysql php${ver}-mbstring php${ver}-bcmath php${ver}-mysql php${ver}-opcache php${ver}-zip php${ver}-xml php${ver}-soap php-imagick graphviz php-pear php-msgpack
 	
 	if [[ -n $ver && ($ver == "7.1" || $ver == "7.0" || $ver == "5.6") ]]; then
 		# mcrypt deprecated in 7.2
-		sudo apt-get -y install php${ver}-mcrypt
+		sudo apt -y install php${ver}-mcrypt
 	fi
 	if [[ -n $ver && ($ver == "7.3" || $ver == "7.2" || $ver == "7.1" || $ver == "7.0") ]]; then
 		# xdebug deprecated in 5.6
-		sudo apt-get -y install php-xdebug
+		sudo apt -y install php-xdebug
 	fi
 	
 	def=$(conf_read php-ver)
@@ -263,7 +263,7 @@ mysql_install() {
 	
 	# debconf-utils for unattended scripts
 	#  debconf-get-selections | grep phpmyadmin   <<-- list conf variables
-	sudo apt-get -y install debconf-utils
+	sudo apt -y install debconf-utils
 	
 	# Generate mysql user passwords
 	local AUTOGENPASS_ROOT=`pwgen -s -1`
@@ -276,7 +276,7 @@ mysql_install() {
 	# MariaDB Installation
 	echo "mariadb-server-10.2 mysql-server/root_password password $AUTOGENPASS_ROOT" | debconf-set-selections
 	echo "mariadb-server-10.2 mysql-server/root_password_again password $AUTOGENPASS_ROOT" | debconf-set-selections
-	sudo apt-get -y install mariadb-server
+	sudo apt -y install mariadb-server
 
 	#Instead of mysql_secure_installation we do this: (same but manually, because not acept unattended)
 	#ALTER USER 'root'@'localhost' IDENTIFIED BY '${AUTOGENPASS_ROOT}';   <<<--- For MySQL 5.7.6 and newer as well as MariaDB 10.1.20 and newer instead of UPDATE
@@ -424,10 +424,10 @@ nginx_tool() {
 	# Install LetsEncrypt
 	echo | sudo add-apt-repository ppa:certbot/certbot
 	pre_install
-	sudo apt-get -y install certbot
+	sudo apt -y install certbot
 	
 	# Instalar Duply & Duplicity
-	sudo apt-get -y install python-boto duplicity duply
+	sudo apt -y install python-boto duplicity duply
 	
 	conf_write nginx-tool true
 	api-events_update in10
@@ -462,15 +462,15 @@ php_tool() {
 	# Redis (Object Cache)
 	echo | sudo add-apt-repository ppa:chris-lea/redis-server
 	pre_install
-	sudo apt-get -y install redis-server php-redis
+	sudo apt -y install redis-server php-redis
 	
 	# Memcached (Object Cache)
-	sudo apt-get -y install php-memcached php-memcache memcached
+	sudo apt -y install php-memcached php-memcache memcached
 	
 	# Postfix mail
 	echo "postfix postfix/main_mailer_type        select  Internet Site" | debconf-set-selections
 	echo "postfix postfix/mailname        string  $hostname" | debconf-set-selections
-	sudo apt-get -y install postfix
+	sudo apt -y install postfix
 
 	sudo service php*-fpm reload
 	conf_write php-tool true
diff --git a/plugins/httpauth b/plugins/httpauth
index a2e61d3..63e4a5e 100644
--- a/plugins/httpauth
+++ b/plugins/httpauth
@@ -1,6 +1,6 @@
 #!/bin/bash
 source /opt/webinoly/lib/general
-opt=${1,,}
+opt=$1
 
 # Http-Authentication Plugin
 # Syntax: httpauth <option>
diff --git a/plugins/log b/plugins/log
index dd4bfcb..eb85473 100644
--- a/plugins/log
+++ b/plugins/log
@@ -6,8 +6,8 @@
 # Notes: If no domain or option is entered, access logs are displayed.
 
 source /opt/webinoly/lib/general
-domain=${1,,}
-opt=${2,,}
+domain=$1
+opt=$2
 
 error() {
 	echo ""
@@ -18,8 +18,8 @@ error() {
 
 # Validations
 if [[ $domain =~ ^(-error|-wp)$ || $domain == "-only-error="* ]]; then
-	domain=${2,,}
-	opt=${1,,}
+	domain=$2
+	opt=$1
 fi
 
 # Extract value if exist
diff --git a/plugins/site b/plugins/site
index ffd2dfe..2f85bf1 100644
--- a/plugins/site
+++ b/plugins/site
@@ -8,9 +8,9 @@
 # shopt is necessary for this kind !(html|22222) of patterns
 shopt -s extglob
 
-domain=${1,,}
-type=${2,,}
-cache=${3,,}
+domain=$1
+type=$2
+cache=$3
 
 source /opt/webinoly/lib/general
 source /opt/webinoly/lib/sites
@@ -23,6 +23,11 @@ if [[ ! $(conf_read nginx) == "true" ]]; then
 	exit 1
 fi
 
+# Check if user entered arg before option and correct it.
+if [[ -n $cache && $type =~ ^(-cache|-root|-root-path|-subdomain|-ignore-ssl|-wildcard)$ ]]; then
+	type=$3
+	cache=$2
+fi
 
 # Extract value if exist
 if [[ $domain == "-mysql="* ]]; then
@@ -38,12 +43,6 @@ if [[ $cache == "-root="*  || $cache == "-subdomain="* || $cache == "-root-path=
 	cache=$(echo "${cache}" | cut -d'=' -f 1 -s)
 fi
 
-# Check if user entered arg before option and correct it.
-if [[ -n $cache && ($type == "-cache" || $type == "-root" || $type == "-root-path" || $type == "-subdomain" || $type == "-ignore-ssl" || $type == "-wildcard") ]]; then
-	type=${3,,}
-	cache=${2,,}
-fi
-
 
 # Check if site is sub-domain
 if [[ -n $domain && $type =~ ^(-html|-php|-mysql|-wp|-wpsubdir|-wpsubdom|-parked|-proxy|-ssl-on|-force-redirect)$ ]]; then
diff --git a/plugins/stack b/plugins/stack
index 2b0ce34..b427139 100644
--- a/plugins/stack
+++ b/plugins/stack
@@ -7,14 +7,14 @@
 
 source /opt/webinoly/lib/install
 source /opt/webinoly/lib/webin
-opt=${1,,}
-arg=${2,,}
+opt=$1
+arg=$2
 
 
 # Check if user entered arg before option and correct it.
-if [[ $opt == "-purge" || $opt == "-notools" || $opt == "-noptim" ]]; then
-	opt=${2,,}
-	arg=${1,,}
+if [[ $opt =~ ^(-purge|-notools|-noptim)$ ]]; then
+	opt=$2
+	arg=$1
 fi
 
 # FORCE - Unattended Purge
@@ -94,18 +94,18 @@ elif [[ $arg == "-purge" && ( $opt == "-html" || $opt == "-nginx" ) ]]; then
 		fi
 		
 		sudo service nginx stop
-		sudo apt-get -y purge nginx nginx-common
+		sudo apt -y purge nginx nginx-common
 		[[ $(conf_read nginx-ppa) == "mainline" ]] && echo | sudo add-apt-repository --remove 'ppa:nginx/development' || echo | sudo add-apt-repository --remove 'ppa:nginx/stable'
 		api-events_update pn4
 		api-events_update pn5
-		sudo apt-get -y purge certbot python-boto duplicity duply
+		sudo apt -y purge certbot python-boto duplicity duply
 		echo | sudo add-apt-repository --remove 'ppa:certbot/certbot'
 		# Remove SSL Cron
 		if [[ -a /var/spool/cron/crontabs/root ]]; then
 			sudo sed -i '/MAILTO=/d' /var/spool/cron/crontabs/root
 			sudo sed -i '/certbot renew/d' /var/spool/cron/crontabs/root
 		fi
-		sudo apt-get -y autoremove
+		sudo apt -y autoremove
 		sudo rm $HOME/www
 		sudo rm $HOME/sites-available
 		api-events_update pn6
@@ -149,12 +149,12 @@ elif [[ $arg == "-purge" && $opt == "-php" ]]; then
 	if [[ $answer == [Yy] || $(conf_read force-flag) == "true" ]]; then
 		[[ $(conf_read mysql-tool) == "true" ]] && stack -pma -purge
 		sudo service php*-fpm stop
-		sudo apt-get -y purge php*-fpm php*-curl php*-gd php*-imap php*-mcrypt php*-readline php*-common php*-recode php*-mysql php*-cli php*-mbstring php*-bcmath php*-mysql php*-opcache php*-zip php*-xml php*-soap php-imagick graphviz php-pear php-xdebug php-msgpack
-		sudo apt-get -y purge php-memcached php-memcache memcached
-		sudo apt-get -y purge redis-server php-redis postfix
+		sudo apt -y purge php*-fpm php*-curl php*-gd php*-imap php*-mcrypt php*-readline php*-common php*-recode php*-mysql php*-cli php*-mbstring php*-bcmath php*-mysql php*-opcache php*-zip php*-xml php*-soap php-imagick graphviz php-pear php-xdebug php-msgpack
+		sudo apt -y purge php-memcached php-memcache memcached
+		sudo apt -y purge redis-server php-redis postfix
 		echo | sudo add-apt-repository --remove 'ppa:ondrej/php'
 		echo | sudo add-apt-repository --remove 'ppa:chris-lea/redis-server'
-		sudo apt-get -y autoremove
+		sudo apt -y autoremove
 		sudo rm -rf /etc/php
 		sudo rm /opt/webinoly/templates/source/*
 
@@ -212,10 +212,10 @@ elif [[ $arg == "-purge" && $opt == "-mysql" ]]; then
 		fi	
 		sudo service mysql stop
 		echo "mariadb-server-10.2 mariadb-server-10.2/postrm_remove_databases boolean true" | debconf-set-selections
-		sudo apt-get -y purge mariadb-server mariadb-common mysql-common
-		sudo apt-get -y purge mariadb-client
-		sudo apt-get -y purge debconf-utils
-		sudo apt-get -y autoremove
+		sudo apt -y purge mariadb-server mariadb-common mysql-common
+		sudo apt -y purge mariadb-client
+		sudo apt -y purge debconf-utils
+		sudo apt -y autoremove
 		
 		os_name=$(check_osname)
 		sudo add-apt-repository --remove "deb [arch=amd64,i386,ppc64el] http://mirrors.syringanetworks.net/mariadb/repo/10.2/ubuntu ${os_name} main"
diff --git a/plugins/webinoly b/plugins/webinoly
index 0bede88..ea556cd 100644
--- a/plugins/webinoly
+++ b/plugins/webinoly
@@ -4,7 +4,7 @@
 # Syntax: webinoly <option>
 # Options: -update, -server-update or -server-reset, -verify, -dbpass, -tools-port, -login-www-data, -nologin-www-data, -config-cache, -uninstall, -info, -external-sources-update, -clear-cache, -version, -blockip, -unblockip, -conf-value_, -yoast-sitemap
 
-opt=${1,,}
+opt=$1
 source /opt/webinoly/lib/webin
 
 # Extract value if exist
@@ -12,7 +12,7 @@ if [[ $opt == "-tools-port="* || $opt == "-config-cache="* || $opt == "-clear-ca
 	value=$(echo "${opt}" | cut -d'=' -f 2 -s)
 	opt=$(echo "${opt}" | cut -d'=' -f 1 -s)
 	# Prevent cases like -conf-value where is valid enter a value without = causing empty opt.
-	[[ -z $opt ]] && opt=${1,,}
+	[[ -z $opt ]] && opt=$1
 fi