diff --git a/seqs/librenms.sh b/seqs/librenms.sh
index f94c46b..f3dac63 100755
--- a/seqs/librenms.sh
+++ b/seqs/librenms.sh
@@ -3,35 +3,25 @@
 #
 ## Installation and maintenance for LibreNMS
 
-toolName="librenms"
-toolUser="librenms"
+readonly toolName="librenms"
+readonly toolUser="librenms"
+
+libreDeps='acl curl fping git graphviz imagemagick mtr-tiny nmap python3-dotenv python3-pymysql python3-redis python3-setuptools python3-systemd python3-pip rrdtool snmp snmpd whois'
+librePhpDeps=(cli curl fpm gd gmp mbstring mysql snmp xml zip)
+
+sq_aptOpt=
 phpVersion=
 
-libreDeps='acl curl composer fping git graphviz imagemagick mtr-tiny nmap rrdtool snmp snmpd whois python3-dotenv python3-pymysql python3-redis python3-setuptools'
-
-librePhpDeps='php${phpVersion}-cli php${phpVersion}-curl php${phpVersion}-fpm php${phpVersion}-gd php${phpVersion}-json php${phpVersion}-mbstring php${phpVersion}-mysql php${phpVersion}-snmp php${phpVersion}-xml php${phpVersion}-zip'
-
-#librePhpDeps="composer php-cli-prompt php-composer-ca-bundle php-composer-semver php-composer-spdx-licenses php-json-schema php-psr-log php-symfony-console php-symfony-filesystem php-symfony-finder php-symfony-polyfill-mbstring php-symfony-process"
-#librePackages="fping git graphviz imagemagick mtr-tiny nmap python-memcache python-mysqldb rrdtool snmp snmpd whoisi nagios-plugins"
-
-# Get script working directory
-# (when called from a different directory)
-WDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >>/dev/null 2>&1 && pwd )"
-CONFIG=0
-SCRIPT_NAME=$(basename -- "$0")
-SCRIPT_NAME=${SCRIPT_NAME%%.*}
-CONFIG_FILE_NAME="${SCRIPT_NAME}.cfg"
-CONFIG_FILE_TEMPLATE="$WDIR/${CONFIG_FILE_NAME}.example"
-
 seq_config() {
-  initSeqConfig "$CONFIG_FILE_NAME" "$CONFIG_FILE_TEMPLATE"
-  if [ $? -eq 0 ] ; then
-    CONFIG=1
+  #initSeqConfig "$CONFIG_FILE_NAME" "$CONFIG_FILE_TEMPLATE"
+  if initSeqConfig "${seq_configName:?}" "${seq_configTemplate:?}" ; then
     info "     Install: $LNMS_DIR"
     info "      Backup: $LNMS_BU_DIR"
   else
     dry || return 1
   fi
+  
+  return 0
 }
 
 step_1_info() { echo "Updating apt"; }
@@ -45,18 +35,18 @@ step_2_info() {
   echoinfo "$libreDeps"
 }
 step_2() {
-  exe apt install $libreDeps
+  exe apt install $libreDeps ${sq_aptOpt}
   endReturn -o $? "Failed to install $toolName dependencies"
 }
 
 step_3_info() {
   echo "Installing PHP related packages:"
   fetchPhpVersion
-  echoinfo `eval echo "$librePhpDeps"`
+  echoinfo "${librePhpDeps[@]/#/php${phpVersion}-}"
 }
 step_3() {
   fetchPhpVersion
-  exe apt install `eval echo "$librePhpDeps"`
+  exe apt install "${librePhpDeps[@]/#/php${phpVersion}-}" ${sq_aptOpt}
   endReturn -o $? "Failed to install $toolName php dependencies"
 }
 
@@ -64,8 +54,6 @@ step_4_info() { echo "Adding $toolName user ($toolUser)"; }
 step_4() {
   exe useradd $toolUser -d "$LNMS_DIR" -M -r -s "$(which bash)"
   saveReturn $?
-  #exe usermod -a -G librenms www-data
-  #saveReturn $?
   endReturn "Failed to create user $toolUser"
 }
 
@@ -85,10 +73,10 @@ step_6() {
 step_10_info() { echo "Create mysql database for $toolName"; }
 step_10() {
   local libreDbOpt=
-  if [ ! -z "$LNMS_DB_NAME" ] ; then
+  if [ -n "$LNMS_DB_NAME" ] ; then
     libreDbOpt="-d $LNMS_DB_NAME"
   fi
-  exe ${WDIR}/mysql.sh -q createdb --charset utf8 $libreDbOpt
+  exe "${seq_origin}"/mysql.sh ${sqr_args} createdb --charset utf8 "$libreDbOpt"
   endReturn -o $? "Failed to create mysql database $LNMS_DB_NAME"
 }
 
@@ -113,12 +101,13 @@ SQLCONF_END
 step_12_info() { echo "PHP fpm/cli timezone configuration"; }
 step_12() {
   color green
+  fetchPhpVersion
   cat << PHPCONF_END
 
 Ensure date.timezone is set in php.ini to your preferred time zone. See http://php.net/manual/en/timezones.php for a list of supported timezones. Valid examples are: "America/New_York", "Europe/Berlin", "Etc/UTC".
 
-vi /etc/php/7.3/fpm/conf.d/90-custom_pi.ini
-vi /etc/php/7.3/cli/conf.d/90-custom_pi.ini
+vi /etc/php/${phpVersion}/fpm/conf.d/90-custom_pi.ini
+vi /etc/php/${phpVersion}/cli/conf.d/90-custom_pi.ini
 
 -------------------------------------------
 date.timezone = Europe/Berlin
@@ -134,8 +123,8 @@ step_13() {
   color green
   cat << FPMCONF_END
 
-cp /etc/php/7.3/fpm/pool.d/www.conf /etc/php/7.3/fpm/pool.d/librenms.conf
-vi /etc/php/7.3/fpm/pool.d/librenms.conf
+cp /etc/php/${phpVersion}/fpm/pool.d/www.conf /etc/php/${phpVersion}/fpm/pool.d/librenms.conf
+vi /etc/php/${phpVersion}/fpm/pool.d/librenms.conf
 
 # Change [www] to [librenms]:
 
@@ -184,27 +173,27 @@ NGINXCONF_END
 step_20_info() { echo "Create $toolName cron job"; }
 step_20_alias() { echo "cron"; }
 step_20() {
-  sqr::echo -n " [I] Creating $lnmsCronLoc ... "
-  exe cp "${LNMS_DIR}/librenms.nonroot.cron" "$lnmsCronLoc" && sqr::echo "Ok" || sqr::echo "Nok"
+  local lnmsCronLoc="/etc/cron.d/librenms"
+  info -n "Creating $lnmsCronLoc ... "
+  exe cp "${LNMS_DIR}/librenms.nonroot.cron" "$lnmsCronLoc" && info -d "Ok" || info -d "Nok"
 }
-lnmsCronLoc="/etc/cron.d/librenms"
 
 step_22_info() { echo "Enable lnms command completion"; }
 step_22_alias() { echo "cmdcompletion"; }
 step_22() {
-  exep 'echo -e "#!/bin/bash\nsudo -u '$toolUser' \"'$LNMS_DIR'/lnms\" \"\$@\"" > '"$lnmsLocalBin"
+  local lnmsLocalBin="/usr/local/bin/lnms"
+  exep echo -e '"#!/usr/bin/env bash\nsudo -u '$toolUser' \"'$LNMS_DIR'/lnms\" \"\$@\""' \> "$lnmsLocalBin"
   exe chmod 744 "$lnmsLocalBin"
   exe cp "${LNMS_DIR}/misc/lnms-completion.bash" /etc/bash_completion.d/
 }
-lnmsLocalBin="/usr/local/bin/lnms"
 
 step_24_info() { echo "Copy logrotate config"; }
 step_24_alias() { echo "logrotate"; }
 step_24() {
-  sqr::echo -n " [I] Creating $lnmsLogrotLoc ... "
-  exe cp "${LNMS_DIR}/misc/librenms.logrotate" "$lnmsLogrotLoc" && sqr::echo "Ok" || sqr::echo "Nok"
+  local lnmsLogrotLoc="/etc/logrotate.d/librenms"
+  info -n "Creating $lnmsLogrotLoc ... "
+  exe cp "${LNMS_DIR}/misc/librenms.logrotate" "$lnmsLogrotLoc" && info -d "Ok" || info -d "Nok"
 }
-lnmsLogrotLoc="/etc/logrotate.d/librenms"
 
 step_26_info() { echo "Install nagios plugin to enable services"; }
 step_26_alias() { echo "services"; }
@@ -212,10 +201,10 @@ step_26() {
   exe apt install monitoring-plugins
   info
   info " [$LNMS_DIR/config.php]"
-  info "\$config['show_services']           = 1;"
-  info
-  info " [/etc/cron.d/librenms]"
-  info "  */5 * * * * librenms /opt/librenms/services-wrapper.py 1"
+  info -a "  \$config['show_services']           = 1;"
+  info -a
+  info -a " [/etc/cron.d/librenms]"
+  info -a "  */5 * * * * librenms /opt/librenms/services-wrapper.py 1"
 }
 
 step_30_info() { echo "Backup ${toolName} web direcotry"; }
@@ -223,21 +212,21 @@ step_30_alias() { echo "backup"; }
 step_30() {
   info "Backup install directory to ${LNMS_BU_DIR}"
   exe mkdir -p "$LNMS_BU_DIR"
-  exep "cd \"${LNMS_DIR}\"/.. && tar czf \"${LNMS_BU_DIR}/\`date +%Y%m%d\`_${toolName}_web.tar.gz\" \"$(basename "$LNMS_DIR")\""
+  exep cd "${LNMS_DIR}"/.. "&&" tar czf "${LNMS_BU_DIR}/$(date +%Y%m%d)_${toolName}_web.tar.gz" "$(basename "$LNMS_DIR")"
 }
 
-step_31_info() { echo "Backup ${toolName} database [daily|monthly(default)]"; }
+step_31_info() { echoinfoArgs "[daily|monthly(default)]"; echo "Backup ${toolName} database"; }
 step_31_alias() { echo "backupdb"; }
 step_31() {
-  case "$2" in
-    daily|Daily|DAILY)
+  case "${2:-}" in
+    daily | Daily | DAILY)
       info "Daily backup..."
-      exep "mysqldump --single-transaction -u root ${LNMS_DB_NAME} | bzip2 -c > \"${LNMS_BU_DIR}/${toolName}_daily.sql.bz2\""
+      exep mysqldump --single-transaction -u root "${LNMS_DB_NAME}" \| bzip2 -c \> "${LNMS_BU_DIR}/${toolName}_daily.sql.bz2"
       ;;
     *)
       exe mkdir -p "$LNMS_BU_DIR/monthly"
       info "Monthly backup..."
-      exep "mysqldump --single-transaction -u root ${LNMS_DB_NAME} | bzip2 -c > \"${LNMS_BU_DIR}/monthly/\`date +%Y%m%d\`_${toolName}.sql.bz2\""
+      exep mysqldump --single-transaction -u root "${LNMS_DB_NAME}" \| bzip2 -c \> "${LNMS_BU_DIR}/monthly/$(date +%Y%m%d)_${toolName}.sql.bz2"
       ;;
   esac
 }
@@ -267,13 +256,14 @@ step_42() {
 }
 
 fetchPhpVersion() { 
-  if [ ! -z $phpVersion ] ; then 
+  if [ -n "${phpVersion}" ] ; then 
     return 0 
   fi 
 
   phpVersion="$(php -r 'echo PHP_MAJOR_VERSION.".".PHP_MINOR_VERSION;')" 
 }
 
-# Sequence Revision
+# shellcheck disable=SC2034 # Appears unused
 readonly sqr_minVersion=16
+# shellcheck disable=SC1091 # Don't follow this source
 . /usr/local/bin/sequencer.sh