diff --git a/4-public-ip.sh b/4-public-ip.sh
index 708d0aa..7d6bafa 100755
--- a/4-public-ip.sh
+++ b/4-public-ip.sh
@@ -4,40 +4,40 @@
 # keep trying until we get a result
 
 # dig
-if [[ -n $(command -v "dig") ]]; then
+if [[ -n $(command -v 'dig') ]]; then
     # via opendns
-    address=$(dig "@resolver1.opendns.com" -4 "myip.opendns.com" "A" "+short")
-    if [[ "$?" -ne "0" ]]; then
+    address=$(dig '@resolver1.opendns.com' -4 'myip.opendns.com' A '+short')
+    if [[ "$?" -ne '0' ]]; then
         # dig was unsuccessful
-        echo "$address" 1>&2
-        address=""
+        echo "${address}" 1>&2
+        address=''
     fi
 fi
 
 # curl
-if [[ -z "$address" ]] && [[ -n $(command -v "curl") ]]; then
+if [[ -z "${address}" ]] && [[ -n $(command -v 'curl') ]]; then
     # via ipinfo.io
-    address=$(curl -4 --fail --silent --show-error "https://ipinfo.io/ip")
+    address=$(curl -4 --fail --silent --show-error 'https://ipinfo.io/ip')
 
-    if [[ -z "$address" ]]; then
+    if [[ -z "${address}" ]]; then
         # via google
-        address=$(curl -4 --fail --silent --show-error "https://domains.google.com/checkip")
+        address=$(curl -4 --fail --silent --show-error 'https://domains.google.com/checkip')
     fi
 fi
 
 # wget
-if [[ -z "$address" ]] && [[ -n $(command -v "wget") ]]; then
+if [[ -z "${address}" ]] && [[ -n $(command -v 'wget') ]]; then
     # via ipinfo.io
-    address=$(wget -4 --quiet --output-document - "https://ipinfo.io/ip")
+    address=$(wget -4 --quiet --output-document - 'https://ipinfo.io/ip')
 
-    if [[ -z "$address" ]]; then
+    if [[ -z "${address}" ]]; then
         # via google
-        address=$(wget -4 --quiet --output-document - "https://domains.google.com/checkip")
+        address=$(wget -4 --quiet --output-document - 'https://domains.google.com/checkip')
     fi
 fi
 
-if [[ -n "$address" ]]; then
-    echo "$address"
+if [[ -n "${address}" ]]; then
+    echo "${address}"
 else
     echo 'Tried everything, unable to resolve IP address.' 1>&2
 fi
diff --git a/6-public-ip.sh b/6-public-ip.sh
index 4396e98..76d7ff4 100755
--- a/6-public-ip.sh
+++ b/6-public-ip.sh
@@ -3,44 +3,44 @@
 # there are a few different ways to resolve public-ip,
 # keep trying until we get a result
 
-# device info
-address=$(ip -6 addr list scope global | grep -v " fc" | grep -v " fd" | sed -n 's/.*inet6 \([0-9a-f:]\+\).*/\1/p' | head -n 1)
+# device address
+address=$(ip -6 addr list scope global | grep -v ' fc' | grep -v ' fd' | sed -n 's/.*inet6 \([0-9a-f:]\+\).*/\1/p' | head -n 1)
 
 # dig
-if [[ -z "$address" ]] && [[ -n $(command -v "dig") ]]; then
+if [[ -z "${address}" ]] && [[ -n $(command -v 'dig') ]]; then
     # via opendns
-    address=$(dig "@resolver1.opendns.com" -6 "myip.opendns.com" "AAAA" "+short")
-    if [[ "$?" -ne "0" ]]; then
+    address=$(dig '@resolver1.opendns.com' -6 'myip.opendns.com' AAAA '+short')
+    if [[ "$?" -ne '0' ]]; then
         # dig was unsuccessful
-        echo "$address" 1>&2
-        address=""
+        echo "${address}" 1>&2
+        address=''
     fi
 fi
 
 # curl
-if [[ -z "$address" ]] && [[ -n $(command -v "curl") ]]; then
+if [[ -z "${address}" ]] && [[ -n $(command -v 'curl') ]]; then
     # via ipinfo.io
-    address=$(curl -6 --fail --silent --show-error "https://v6.ipinfo.io/ip")
+    address=$(curl -6 --fail --silent --show-error 'https://v6.ipinfo.io/ip')
 
-    if [[ -z "$address" ]]; then
+    if [[ -z "${address}" ]]; then
         # via google
-        address=$(curl -6 --fail --silent --show-error "https://domains.google.com/checkip")
+        address=$(curl -6 --fail --silent --show-error 'https://domains.google.com/checkip')
     fi
 fi
 
 # wget
-if [[ -z "$address" ]] && [[ -n $(command -v "wget") ]]; then
+if [[ -z "${address}" ]] && [[ -n $(command -v 'wget') ]]; then
     # via ipinfo.io
-    address=$(wget -6 --quiet --output-document - "https://v6.ipinfo.io/ip")
+    address=$(wget -6 --quiet --output-document - 'https://v6.ipinfo.io/ip')
 
-    if [[ -z "$address" ]]; then
+    if [[ -z "${address}" ]]; then
         # via google
-        address=$(wget -6 --quiet --output-document - "https://domains.google.com/checkip")
+        address=$(wget -6 --quiet --output-document - 'https://domains.google.com/checkip')
     fi
 fi
 
-if [[ -n "$address" ]]; then
-    echo "$address"
+if [[ -n "${address}" ]]; then
+    echo "${address}"
 else
     echo 'Tried everything, unable to resolve IP address.' 1>&2
 fi
diff --git a/setup/0-pre-config.sh b/setup/0-pre-config.sh
index bc07e14..b5bca3e 100755
--- a/setup/0-pre-config.sh
+++ b/setup/0-pre-config.sh
@@ -1,10 +1,10 @@
 #!/usr/bin/env bash
 
-read -p 'Install git and vim? [y/N]: ' response
+read -p 'Install prerequisites (git, vim, curl, and jq)? [y/N]: ' response
 case "${response}" in
     [Yy]* )
         # before we can begin, we need what should have already been installed
-        sudo apt install git vim -y
+        sudo apt install git vim vim-editorconfig curl jq -y
         ;;
     * )
         echo 'Skipping'
diff --git a/setup/1-choose-packages.sh b/setup/1-choose-packages.sh
index eeb397d..8630c1b 100755
--- a/setup/1-choose-packages.sh
+++ b/setup/1-choose-packages.sh
@@ -72,14 +72,14 @@ install_collection 'extra utilities: (ncdu, zip, php, rclone, etc.)' ncdu zip un
 
 # ----------------------------------------------------------
 
-if [[ -n $(command -v "php") ]]; then
+if [[ -n $(command -v 'php') ]]; then
     read -p 'Install PHP Composer? [y/N]: ' response
     case "${response}" in
         [Yy]* )
             return_dir=$(pwd)
             cd "${package_dir}"
             "${package_dir}/composer-install/composer-install.sh"
-            if [[ -f "composer.phar" ]]; then
+            if [[ -f 'composer.phar' ]]; then
                 sudo mv composer.phar /usr/bin/composer
             fi
             cd "${return_dir}"
@@ -127,7 +127,7 @@ install_collection 'Ruby: (ruby, build-essential)' ruby-full build-essential zli
 
 # ----------------------------------------------------------
 
-if [[ -n $(command -v "ruby") ]]; then
+if [[ -n $(command -v 'ruby') ]]; then
     read -p 'Configure GEM_HOME and PATH for Ruby support? [y/N]: ' response
     case "${response}" in
         [Yy]* )
@@ -164,17 +164,19 @@ echo ''
 
 # ----------------------------------------------------------
 
-read -p 'Install Node.js packages "yarn" and "http-server" globally? [y/N]: ' response
-case "${response}" in
-    [Yy]* )
-        sudo npm install --global yarn
-        sudo npm install --global http-server
-        ;;
-    * )
-        echo 'Skipping'
-        ;;
-esac
-echo ''
+if [[ -n $(command -v 'npm') ]]; then
+    read -p 'Install Node.js packages "yarn" and "http-server" globally? [y/N]: ' response
+    case "${response}" in
+        [Yy]* )
+            sudo npm install --global yarn
+            sudo npm install --global http-server
+            ;;
+        * )
+            echo 'Skipping'
+            ;;
+    esac
+    echo ''
+fi
 
 # ----------------------------------------------------------
 
@@ -182,10 +184,12 @@ read -p 'Install GoLang? [y/N]: ' response
 case "${response}" in
     [Yy]* )
         make_bashrc_backup
-        sudo apt install wget jq -y
+        if [[ -z $(command -v 'curl') ]] || [[ -z $(command -v 'jq') ]]; then
+            sudo apt install curl jq -y
+        fi
         # load json file with version info, filter to only stable versions, take the first (newest), strip to just numeric
         version_flag=''
-        go_version=$(wget --quiet --output-document - 'https://go.dev/dl/?mode=json' | jq -r '.[] | select( .stable ) | .version' | head -n 1 | sed 's/[^0-9.]*//g')
+        go_version=$(curl --fail --silent --show-error 'https://go.dev/dl/?mode=json' | jq -r '.[] | select( .stable ) | .version' | head -n 1 | sed 's/[^0-9.]*//g')
         if [[ -n "${go_version}" ]]; then
             version_flag='--version'
             echo "Installing GoLand Version: ${go_version}"
diff --git a/setup/2-config.sh b/setup/2-config.sh
index 33b816a..0dc0c1b 100755
--- a/setup/2-config.sh
+++ b/setup/2-config.sh
@@ -244,7 +244,9 @@ read -p 'Set VIM colors, config, and plugins? [y/N]: ' response
 case "${response}" in
     [Yy]* )
         make_bashrc_backup
-        sudo apt install vim vim-editorconfig jq curl -y
+        if [[ -z $(command -v 'vim') ]] || [[ -z $(command -v 'curl') ]] || [[ -z $(command -v 'jq') ]]; then
+            sudo apt install vim curl jq -y
+        fi
         ( cat << 'BASHRC'
 
 # ABS default to using vim