diff --git a/README.md b/README.md
index d2f3338..0b786eb 100644
--- a/README.md
+++ b/README.md
@@ -51,13 +51,13 @@ Next to this, you can pass ANY zaf config options by *ZAF_* prefix. Interresting
  ZAF_GIT='1'# Default
 
  # Git repository. Can be your local version
- ZAF_PLUGINS_GITURL='https://github.com/limosek/zaf-plugins.git'
+ ZAF_REPO_GITURL='https://github.com/limosek/zaf-plugins.git'
 
  # Where to install plugins
  ZAF_PLUGINS_DIR='/usr/lib/zaf/plugins'
 
  # Plugins can be downloaded from http[s] too
- ZAF_PLUGINS_URL='https://raw.githubusercontent.com/limosek/zaf-plugins/master/'
+ ZAF_REPO_URL='https://raw.githubusercontent.com/limosek/zaf-plugins/master/'
 
 ```
 
@@ -72,7 +72,7 @@ curl -k https://raw.githubusercontent.com/limosek/zaf/1.0/install.sh | sh -s aut
   Z_Server=zabbix.server.local \
   Z_ServerActive=zabbix.server.local \
   Z_HostnameItem=system.hostname Z_RefreshActiveChecks=60 \
-  ZAF_PLUGINS_GITURL="git://gitserver.local"
+  ZAF_REPO_GITURL="git://gitserver.local"
 ```
 
 ### Packaged version
diff --git a/files/zaf.conf-deb.template b/files/zaf.conf-deb.template
deleted file mode 100644
index d6a8345..0000000
--- a/files/zaf.conf-deb.template
+++ /dev/null
@@ -1,12 +0,0 @@
-ZAF_PKG='dpkg'
-ZAF_AGENT_PKG='zabbix-agent'
-ZAF_TMP_BASE='/tmp/zaf'
-ZAF_LIB_DIR='/usr/lib/zaf'
-ZAF_BIN_DIR='/usr/bin'
-ZAF_PLUGINS_DIR='/usr/lib/zaf/plugins'
-ZAF_PLUGINS_URL='https://raw.githubusercontent.com/limosek/zaf-plugins/master/'
-ZAF_PLUGINS_GITURL='https://github.com/limosek/zaf-plugins.git'
-ZAF_REPO_DIR='/usr/lib/zaf/repo'
-ZAF_AGENT_CONFIGD='/etc/zabbix/zabbix_agentd.d'
-ZAF_AGENT_BIN='/usr/sbin/zabbix_agentd'
-ZAF_AGENT_RESTART='service zabbix-agent restart'
diff --git a/install.sh b/install.sh
index ad5e72b..f1a6be4 100755
--- a/install.sh
+++ b/install.sh
@@ -99,9 +99,10 @@ zaf_set_option(){
 	local description
 	if ! grep -q "^$1=" ${ZAF_CFG_FILE}; then
 		echo "$1='$2'" >>${ZAF_CFG_FILE}
-		zaf_dbg "Saving $1 to $2 in ${ZAF_CFG_FILE}" >&2
+		zaf_dbg "Saving $1 to $2 in ${ZAF_CFG_FILE}"
 	else
-		zaf_wrn "Preserving $1 to $2 in ${ZAF_CFG_FILE}" >&2
+		sed -i "s#^$1=\(.*\)#$1='$2'#" ${ZAF_CFG_FILE}
+		zaf_dbg "Changing $1 to $2 in ${ZAF_CFG_FILE}"
 	fi
 }
 
@@ -215,8 +216,8 @@ zaf_configure(){
 	zaf_get_option ZAF_LIB_DIR "Libraries directory" "/usr/lib/zaf" "$INSTALL_MODE"
         zaf_get_option ZAF_BIN_DIR "Directory to put binaries" "/usr/bin" "$INSTALL_MODE"
 	zaf_get_option ZAF_PLUGINS_DIR "Plugins directory" "${ZAF_LIB_DIR}/plugins" "$INSTALL_MODE"
-	[ "${ZAF_GIT}" = 1 ] && zaf_get_option ZAF_PLUGINS_GITURL "Git plugins repository" "https://github.com/limosek/zaf-plugins.git" "$INSTALL_MODE"
-	zaf_get_option ZAF_PLUGINS_URL "Plugins http[s] repository" "https://raw.githubusercontent.com/limosek/zaf-plugins/master/" "$INSTALL_MODE"
+	[ "${ZAF_GIT}" = 1 ] && zaf_get_option ZAF_REPO_GITURL "Git plugins repository" "https://github.com/limosek/zaf-plugins.git" "$INSTALL_MODE"
+	zaf_get_option ZAF_REPO_URL "Plugins http[s] repository" "https://raw.githubusercontent.com/limosek/zaf-plugins/master/" "$INSTALL_MODE"
 	zaf_get_option ZAF_REPO_DIR "Plugins directory" "${ZAF_LIB_DIR}/repo" "$INSTALL_MODE"
 	zaf_get_option ZAF_AGENT_CONFIG "Zabbix agent config" "/etc/zabbix/zabbix_agentd.conf" "$INSTALL_MODE"
 	! [ -d "${ZAF_AGENT_CONFIGD}" ] && [ -d "/etc/zabbix/zabbix_agentd.d" ] && ZAF_AGENT_CONFIGD="/etc/zabbix/zabbix_agentd.d"
@@ -243,15 +244,14 @@ zaf_configure(){
 	zaf_set_option ZAF_LIB_DIR "$ZAF_LIB_DIR"
         zaf_set_option ZAF_BIN_DIR "$ZAF_BIN_DIR"
 	zaf_set_option ZAF_PLUGINS_DIR "$ZAF_PLUGINS_DIR"
-	zaf_set_option ZAF_PLUGINS_URL "$ZAF_PLUGINS_URL"
-	[ "${ZAF_GIT}" = 1 ] && zaf_set_option ZAF_PLUGINS_GITURL "$ZAF_PLUGINS_GITURL"
+	zaf_set_option ZAF_REPO_URL "$ZAF_REPO_URL"
+	[ "${ZAF_GIT}" = 1 ] && zaf_set_option ZAF_REPO_GITURL "$ZAF_REPO_GITURL"
 	zaf_set_option ZAF_REPO_DIR "$ZAF_REPO_DIR"
 	zaf_set_option ZAF_AGENT_CONFIG "$ZAF_AGENT_CONFIG"
 	zaf_set_option ZAF_AGENT_CONFIGD "$ZAF_AGENT_CONFIGD"
 	zaf_set_option ZAF_AGENT_BIN "$ZAF_AGENT_BIN"
 	zaf_set_option ZAF_AGENT_RESTART "$ZAF_AGENT_RESTART"
 	[ -n "$ZAF_PREPACKAGED_DIR" ] && zaf_set_option ZAF_PREPACKAGED_DIR "$ZAF_PREPACKAGED_DIR"
-	ZAF_TMP_DIR="${ZAF_TMP_BASE}-${USER}-$$"
 
 	if zaf_is_root; then
         	zaf_configure_agent $ZAF_AGENT_OPTIONS "$@"
@@ -274,7 +274,6 @@ zaf_install_all() {
 		zaf_install_bin $i ${ZAF_BIN_DIR}/
 	done
 	zaf_install_dir ${ZAF_PLUGINS_DIR}
-	zaf_install_dir ${ZAF_TMP_DIR}/p/zaf
 	zaf_install_dir ${ZAF_PLUGINS_DIR}
         zaf_install_dir ${ZAF_BIN_DIR}
 }
@@ -291,7 +290,7 @@ zaf_postconfigure() {
 		exit 1
             fi
 	else
-	    [ "${ZAF_GIT}" = 1 ] && [ -n  "${INSTALL_PREFIX}" ] && git clone "${ZAF_PLUGINS_GITURL}" "${INSTALL_PREFIX}/${ZAF_REPO_DIR}"
+	    [ "${ZAF_GIT}" = 1 ] && [ -n  "${INSTALL_PREFIX}" ] && git clone "${ZAF_REPO_GITURL}" "${INSTALL_PREFIX}/${ZAF_REPO_DIR}"
         fi
 	zaf_wrn "Install done. Use 'zaf' to get started."
 	true
@@ -300,7 +299,7 @@ zaf_postconfigure() {
 if [ -f "${ZAF_CFG_FILE}" ]; then
 	. "${ZAF_CFG_FILE}"
 fi
-ZAF_TMP_DIR="${ZAF_TMP_BASE-/tmp/zaf}-${USER}-$$"
+ZAF_TMP_DIR="/tmp/zaf-installer/"
 
 # If debug is on, do not remove tmp dir 
 if [ "$ZAF_DEBUG" -le 3 ]; then
diff --git a/lib/ctrl.lib.sh b/lib/ctrl.lib.sh
index 34ad79d..05f9b12 100644
--- a/lib/ctrl.lib.sh
+++ b/lib/ctrl.lib.sh
@@ -71,12 +71,13 @@ zaf_ctrl_get_item_option() {
 zaf_ctrl_check_deps() {
 	local deps
 	deps=$(zaf_ctrl_get_global_block <$1 | zaf_block_get_option "Depends-${ZAF_PKG}" )
-	zaf_os_specific zaf_check_deps $deps
+	if ! zaf_os_specific zaf_check_deps $deps; then
+		zaf_err "Missing one of dependend system packages: $deps"
+	fi
 	deps=$(zaf_ctrl_get_global_block <$1 | zaf_block_get_option "Depends-bin" )
 	for cmd in $deps; do
 		if ! which $cmd >/dev/null; then
-			zaf_wrn "Missing binary dependency $cmd. Please install it first."
-                        return 1
+			zaf_err "Missing binary dependency $cmd. Please install it first."
 		fi
 	done
 }
diff --git a/lib/os.lib.sh b/lib/os.lib.sh
index a90b6a0..3972114 100644
--- a/lib/os.lib.sh
+++ b/lib/os.lib.sh
@@ -147,7 +147,7 @@ zaf_check_deps_rpm() {
 zaf_check_deps_opkg() {
 	local p
 	for p in $*; do
-		opkg info $p | grep -q 'Package:' || { echo "Missing package $p" >&2; return 1; }
+		opkg info $p | grep -q 'Package:' || { return 1; }
 	done
 }
 
@@ -156,7 +156,7 @@ zaf_check_deps_opkg() {
 zaf_check_deps_pkg() {
 	local p
 	for p in $*; do
-		pkg query -x "Package: %n" $p| grep -q 'Package:' || { echo "Missing package $p" >&2; return 1; }
+		pkg query -x "Package: %n" $p| grep -q 'Package:' || { return 1; }
 	done
 }
 
diff --git a/lib/zaf.lib.sh b/lib/zaf.lib.sh
index 2d74bb8..9e1fbfe 100644
--- a/lib/zaf.lib.sh
+++ b/lib/zaf.lib.sh
@@ -144,10 +144,10 @@ zaf_check_agent_config() {
 # Update repo
 zaf_update_repo() {
 	[ "$ZAF_GIT" != 1 ] && { zaf_err "Git is disabled or is not installed. Exiting."; }
-	if [ -z "${ZAF_PLUGINS_GITURL}" ] || [ -z "${ZAF_REPO_DIR}" ]; then
+	if [ -z "${ZAF_REPO_GITURL}" ] || [ -z "${ZAF_REPO_DIR}" ]; then
 		zaf_err "This system is not configured for git repository."
 	else
-		[ ! -d "${ZAF_REPO_DIR}" ] && git clone "${ZAF_PLUGINS_GITURL}" "${ZAF_REPO_DIR}"
+		[ ! -d "${ZAF_REPO_DIR}" ] && git clone "${ZAF_REPO_GITURL}" "${ZAF_REPO_DIR}"
 		(cd ${ZAF_REPO_DIR} && git pull)
 	fi
 }
@@ -171,7 +171,11 @@ zaf_get_plugin_url() {
 				if [ -n "${ZAF_PREPACKAGED_DIR}" ] &&  [ -d "${ZAF_PREPACKAGED_DIR}/$1" ]; then
 					url="${ZAF_PREPACKAGED_DIR}/$1"
 				else
-					zaf_err "Plugin $1 not found."
+					if [ -n "${ZAF_REPO_URL}" ]; then
+						url="${ZAF_REPO_URL}/$1" 
+					else
+						zaf_err "Cannot find plugin $1"
+					fi
 				fi
 			fi
 		fi
@@ -183,6 +187,7 @@ zaf_get_plugin_url() {
 zaf_plugin_info() {
 	local control="$1"
 
+	! [ -f "$control" ] && zaf_err "Control file $control not found."
 	plugin=$(zaf_ctrl_get_global_block <"${control}" | zaf_block_get_option Plugin)
 	pdescription=$(zaf_ctrl_get_global_block <"${control}" | zaf_block_get_moption Description)
 	pmaintainer=$(zaf_ctrl_get_global_block <"${control}" | zaf_block_get_option Maintainer)
@@ -209,7 +214,7 @@ zaf_prepare_plugin() {
 	local plugindir
 	local control
 
-	url=$(zaf_get_plugin_url "$1")/control.zaf
+	url=$(zaf_get_plugin_url "$1")/control.zaf || exit $?
 	plugindir="$2"
 	control=${plugindir}/control.zaf
 	zaf_install_dir "$plugindir"
@@ -217,7 +222,7 @@ zaf_prepare_plugin() {
 	if zaf_fetch_url "$url" >"${control}"; then
 		zaf_ctrl_check_deps "${control}"
 	else
-		zaf_err "Cannot fetch or write control file!"
+		zaf_err "prepare_plugin: Cannot fetch or write control file $control from url $url!"
 	fi
 }
 
@@ -231,7 +236,7 @@ zaf_install_plugin() {
 		url=$(zaf_get_plugin_url "$1")
                 plugin=$(zaf_ctrl_get_global_block <"${ZAF_TMP_DIR}/plugin/control.zaf" | zaf_block_get_option Plugin)
 		plugindir="${ZAF_PLUGINS_DIR}"/$plugin
-		if zaf_prepare_plugin "$1" $plugindir; then
+		if [ -n "$plugin" ] && zaf_prepare_plugin "$1" $plugindir; then
 			control=${plugindir}/control.zaf
 			[ "$ZAF_DEBUG" -gt 0 ] && zaf_plugin_info "${control}"
 			zaf_ctrl_check_deps "${control}"
@@ -240,7 +245,7 @@ zaf_install_plugin() {
 			  | zaf_far '{PLUGINDIR}' "${plugindir}" >${ZAF_AGENT_CONFIGD}/zaf_${plugin}.conf
 			zaf_dbg "Generated ${ZAF_AGENT_CONFIGD}/zaf_${plugin}.conf"
 		else
-			zaf_err "Cannot install plugin $plugin to $plugindir!"
+			zaf_err "Cannot install plugin '$plugin' to $plugindir!"
 		fi
         else
             	zaf_err "Cannot prepare plugin $1"
diff --git a/zaf b/zaf
index 70f2e13..0870985 100755
--- a/zaf
+++ b/zaf
@@ -19,6 +19,7 @@ done
 [ -z "$ZAF_TMP_BASE" ] && ZAF_TMP_BASE=/tmp/zaf
 ZAF_TMP_DIR="${ZAF_TMP_BASE}-${USER}"
 [ -z "$ZAF_DEBUG" ] && ZAF_DEBUG=1
+export ZAF_DEBUG
 
 # If debug is on, do not remove tmp dir 
 if [ "$ZAF_DEBUG" -le 3 ]; then
@@ -39,6 +40,25 @@ else
 [ -f ${ZAF_LIB_DIR}/zaf.${ZAF_OS}.sh ] && . ${ZAF_LIB_DIR}/zaf.${ZAF_OS}.sh
 fi
 
+zaf_shift(){
+	local s
+
+	if echo $1 |grep -q "="; then
+		if echo $2 |grep -q "="; then
+			if echo $3 |grep -q "="; then
+				s=3
+			else
+				s=2
+			fi
+		else
+			s=1
+		fi
+	else
+		s=0
+	fi
+	echo $s
+}
+
 case $1 in
 
 check-agent-config)
@@ -46,24 +66,25 @@ check-agent-config)
 	;;
 
 update)
-	zaf_wrn "Updating repository ${ZAF_PLUGINS_GITURL}..."
+	zaf_wrn "Updating repository ${ZAF_REPO_GITURL}..."
 	zaf_update_repo
 	;;
 
 show)
-	if [ -z "$2" ]; then
+	shift $(zaf_shift "$@")
+	if [ -z "$1" ]; then
 		zaf_list_plugins | while read plugin; do
 			zaf_plugin_info $ZAF_PLUGINS_DIR/$plugin/control.zaf
 		done
-	else		
-		if zaf_list_plugins | grep -q "^$2"; then
-			zaf_plugin_info $ZAF_PLUGINS_DIR/$2/control.zaf
+	else
+		if zaf_list_plugins | grep -q "^$1"; then
+			[ -f $ZAF_PLUGINS_DIR/$1/control.zaf ] && zaf_plugin_info $ZAF_PLUGINS_DIR/$1/control.zaf || zaf_err "Plugin $1 not installed."
 		else
-			if echo $2 |grep -q ^http; then
-				zaf_prepare_plugin "$2" "$ZAF_TMP_DIR/plugin"
+			if echo $1 |grep -q ^http; then
+				zaf_prepare_plugin "$1" "$ZAF_TMP_DIR/plugin"
 				zaf_plugin_info "$ZAF_TMP_DIR/plugin/control.zaf"
 			else
-				zaf_err "Plugin $2 not installed."
+				zaf_err "Plugin $1 not installed."
 			fi
 		fi
 	fi
@@ -74,37 +95,39 @@ plugins)
 	;;
 
 items)
-	if [ -z "$2" ]; then
+	shift $(zaf_shift "$@")
+	if [ -z "$1" ]; then
 		zaf_list_items
 	else
-		zaf_list_plugin_items "$2"
+		zaf_list_plugin_items "$1"
 	fi
 	;;
 
 test)
-	if echo $2|grep -q '\.'; then
-		zaf_test_item "$2"
+	shift $(zaf_shift "$@")
+	if echo $1|grep -q '\.'; then
+		zaf_test_item "$1"
 		exit
 	fi
-	if [ -n "$2" ]; then
-		shift
+	if [ -n "$1" ]; then
 		plugins="$@"
 	else
 		plugins="$(zaf_list_plugins)"
 	fi
 	for p in $plugins; do
+		! zaf_is_plugin $p && zaf_err "Unknown plugin $p"
 		for i in $(zaf_list_plugin_items $p); do 
 			echo $i: $(zaf_test_item $i)
 		done
 	done
 	;;
 get)
-	if echo $2|grep -q '\.'; then
-		zaf_get_item "$2"
+	shift $(zaf_shift "$@")
+	if echo $1|grep -q '\.'; then
+		zaf_get_item "$1"
 		exit
 	fi
-	if [ -n "$2" ]; then
-		shift
+	if [ -n "$1" ]; then
 		plugins="$@"
 	else
 		plugins="$(zaf_list_plugins)"
@@ -116,7 +139,7 @@ get)
 	done
 	;;
 install)
-	shift;
+	shift $(zaf_shift "$@")
 	[ -z "$1" ] && echo "$0 install plugin [plugin]..."
 	for p in $@; do
 		if zaf_is_plugin "$p"; then
@@ -130,7 +153,8 @@ install)
 	;;
 
 reinstall)
-	shift;
+	shift $(zaf_shift "$@")
+	shift
 	[ -z "$1" ] && echo "$0 reinstall plugin [plugin]..."
 	for p in $@; do
 		if zaf_is_plugin "$p"; then
@@ -144,7 +168,7 @@ reinstall)
 	;;
 
 remove)
-	shift;
+	shift $(zaf_shift "$@")
 	[ -z "$1" ] && echo "$0 remove plugin [plugin]..."
 	for p in $@; do
 		if zaf_is_plugin "$p"; then
@@ -156,26 +180,23 @@ remove)
 	;;
 
 self-upgrade)
+	shift $(zaf_shift "$@")
 	zaf_os_specific zaf_check_deps zaf && zaf_err "Zaf is installed as system package. Cannot self-upgrade."
 	rm -rf /tmp/zaf-installer && mkdir /tmp/zaf-installer
 	if ! which curl >/dev/null;
 	then
 		zaf_err "Curl not found. Cannot continue. Please install it."
 	fi
-	[ -z "$2" ] && auto=auto
-	set -e
-	mkdir -p /tmp/zaf-installer \
-	&& cd /tmp/zaf-installer \
-	&& (for i in lib/zaf.lib.sh lib/os.lib.sh lib/ctrl.lib.sh install.sh ; do echo  curl -f -k -s -L -o - "$ZAF_URL/$i" >&2; curl -f -k -s -L -o - "$ZAF_URL/$i"; done) >install.sh \
-	&& chmod +x install.sh \
-	&& exec ./install.sh $auto "$@"
+	[ -z "$1" ] && auto=auto
+	zaf_fetch_url $ZAF_URL/$ZAF_VERSION/install.sh | exec sh -s "$@"
 	exit
 	;;
 	
 self-remove)
+	shift $(zaf_shift "$@")
 	zaf_os_specific zaf_check_deps zaf && zaf_err "Zaf is installed as system package. Cannot self-remove."
 	. /etc/zaf.conf
-	if [ "$2" = "force" ]; then
+	if [ "$1" = "force" ]; then
 	  rm -rf /etc/zaf.conf ${ZAF_PLUGINS_DIR} ${ZAF_REPO_DIR} ${ZAF_LIB_DIR} \
 		${ZAF_BIN_DIR}/zaf ${ZAF_AGENT_CONFIGD}/zaf_*
 	else
@@ -190,6 +211,8 @@ self-remove)
 
 *)
 	echo "$0 Version ${ZAF_VERSION}. Please use some of this commands:"
+	echo "$0 Cmd [ZAF_OPTION=value] ..."
+	echo "Commands:"
 	echo "$0 update			To update repo" 
 	echo "$0 plugins		To list installed plugins"
 	echo "$0 show [plugin]		To show installed plugins or plugin info"
@@ -200,6 +223,7 @@ self-remove)
 	echo "$0 remove plugin		To remove plugin" 
 	echo "$0 self-upgrade		To self-upgrade zaf"
 	echo "$0 self-remove		To self-remove zaf and its config"
+	echo
 	;;
 
 esac