diff --git a/webmin-install.sh b/webmin-install.sh
index 14f1aa2..fd6ed27 100644
--- a/webmin-install.sh
+++ b/webmin-install.sh
@@ -1,14 +1,202 @@
+
+sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
+
+#!/bin/sh
+# shellcheck disable=SC1090 disable=SC2059 disable=SC2164 disable=SC2181
+# setup-repos.sh
+# Configures Webmin repository for RHEL and Debian systems (derivatives)
+
+webmin_download="https://download.webmin.com"
+webmin_key="jcameron-key.asc"
+webmin_key_download="$webmin_download/$webmin_key"
+developers_key="developers-key.asc"
+developers_key_download="$webmin_download/$developers_key"
+debian_repo_file="/etc/apt/sources.list.d/webmin.list"
+rhel_repo_file="/etc/yum.repos.d/webmin.repo"
+download_wget="/usr/bin/wget"
+download="$download_wget -nv"
+
+# Temporary colors
+NORMAL=''
+GREEN=''
+RED=''
+ITALIC=''
+BOLD=''
+if tty -s; then
+  NORMAL="$(tput sgr0)"
+  GREEN=$(tput setaf 2)
+  RED="$(tput setaf 1)"
+  BOLD=$(tput bold)
+  ITALIC=$(tput sitm)
+fi
+
+# Check user permission
 if [ "$(id -u)" -ne 0 ]; then
     echo "${RED}Error:${NORMAL} \`setup-repos.sh\` script must be run as root!" >&2
     exit 1
 fi
 
-sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
+# Go to temp
+cd "/tmp" 1>/dev/null 2>&1
+if [ "$?" != "0" ]; then
+  echo "${RED}Error:${NORMAL} Failed to switch to \`/tmp\` directory!"
+  exit 1
+fi
+
+# Check for OS release file
+osrelease="/etc/os-release"
+if [ ! -f "$osrelease" ]; then
+  echo "${RED}Error:${NORMAL} Cannot detect OS!"
+  exit 1
+fi
+
+# Detect OS and package manager and install command
+. "$osrelease"
+if [ -n "${ID_LIKE}" ]; then
+    osid="$ID_LIKE"
+else
+    osid="$ID"
+fi
+if [ -z "$osid" ]; then
+  echo "${RED}Error:${NORMAL} Failed to detect OS!"
+  exit 1
+fi
+
+# Derivatives precise test
+osid_debian_like=$(echo "$osid" | grep "debian\|ubuntu")
+osid_rhel_like=$(echo "$osid" | grep "rhel\|fedora\|centos")
+
+# Setup OS dependent
+if [ -n "$osid_debian_like" ]; then
+  package_type=deb
+  install_cmd="apt-get install"
+  install="$install_cmd --quiet --assume-yes"
+  clean="apt-get clean"
+  update="apt-get update"
+elif [ -n "$osid_rhel_like" ]; then
+  package_type=rpm
+  if command -pv dnf 1>/dev/null 2>&1; then
+    install_cmd="dnf install"
+    install="$install_cmd -y"
+    clean="dnf clean all"
+  else
+    install_cmd="yum install"
+    install="$install_cmd -y"
+    clean="yum clean all"
+  fi
+else
+  echo "${RED}Error:${NORMAL} Unknown OS : $osid"
+  exit
+fi
+
+# Ask first
+# printf "Setup Webmin official repository? (y/N) "
+# read -r sslyn
+# if [ "$sslyn" != "y" ] && [ "$sslyn" != "Y" ]; then
+#   exit
+# fi
+
+# Check for wget or curl or fetch
+if [ ! -x "$download_wget" ]; then
+  if [ -x "/usr/bin/curl" ]; then
+    download="/usr/bin/curl -f -s -L -O"
+  elif [ -x "/usr/bin/fetch" ]; then
+    download="/usr/bin/fetch"
+  else
+    # Try installing wget
+    echo "  Installing required ${ITALIC}wget${NORMAL} package from OS repository .."
+    $install wget 1>/dev/null 2>&1
+    if [ "$?" != "0" ]; then
+      echo "  .. failed to install 'wget' package!"
+      exit 1
+    else
+      echo "  .. done"
+    fi
+  fi
+fi
+
+
+# Check if GPG command is installed
+if [ -n "$osid_debian_like" ]; then
+  if [ ! -x /usr/bin/gpg ]; then
+    $update 1>/dev/null 2>&1
+    $install gnupg 1>/dev/null 2>&1
+  fi
+fi
+
+# Clean files
+rm -f "/tmp/$webmin_key"
+rm -f "/tmp/$developers_key"
+
+# Download key
+echo "  Downloading Webmin key .."
+download_out=$($download $webmin_key_download 2>/dev/null 2>&1)
+if [ "$?" != "0" ]; then
+  download_out=$(echo "$download_out" | tr '\n' ' ')
+  echo "  ..failed : $download_out"
+  exit
+fi
+download_out=$($download $developers_key_download 2>/dev/null 2>&1)
+if [ "$?" != "0" ]; then
+  download_out=$(echo "$download_out" | tr '\n' ' ')
+  echo "  ..failed : $download_out"
+  exit
+fi
+echo "  .. done"
+
+# Setup repos
+case "$package_type" in
+rpm)
+  # Install our keys
+  echo "  Installing Webmin key .."
+  rpm --import $webmin_key
+  cp -f $webmin_key /etc/pki/rpm-gpg/RPM-GPG-KEY-webmin
+  rpm --import $developers_key
+  cp -f $developers_key /etc/pki/rpm-gpg/RPM-GPG-KEY-developers
+  echo "  .. done"
+  # Create repo file
+  echo "  Setting up Webmin repository .."
+  echo "[webmin-noarch]" >$rhel_repo_file
+  echo "name=Webmin - noarch" >>$rhel_repo_file
+  echo "baseurl=$webmin_download/download/yum" >>$rhel_repo_file
+  echo "enabled=1" >>$rhel_repo_file
+  echo "gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-webmin" >>$rhel_repo_file
+  echo "gpgcheck=1" >>$rhel_repo_file
+  echo "  .. done"
+  ;;
+deb)
+  # Install our keys
+  echo "  Installing Webmin key .."
+  gpg --import $webmin_key 1>/dev/null 2>&1
+  cat $webmin_key | gpg --dearmor > /usr/share/keyrings/debian-webmin.gpg
+  gpg --import $developers_key 1>/dev/null 2>&1
+  cat $developers_key | gpg --dearmor > /usr/share/keyrings/debian-webmin-developers.gpg
+  echo "  .. done"
+  # Create repo file
+  echo "  Setting up Webmin repository .."
+  echo "deb [signed-by=/usr/share/keyrings/debian-webmin.gpg] $webmin_download/download/repository sarge contrib" >$debian_repo_file
+  echo "  .. done"
+  # Clean meta
+  echo "  Cleaning repository metadata .."
+  $clean 1>/dev/null 2>&1
+  echo "  .. done"
+  # Update meta
+  echo "  Downloading repository metadata .."
+  $update 1>/dev/null 2>&1
+  echo "  .. done"
+  ;;
+*)
+  echo "${RED}Error:${NORMAL} Cannot setup repositories on this system."
+  exit 1
+  ;;
+esac
+
+# Could not setup
+if [ ! -x "/usr/bin/webmin" ]; then
+  echo "Webmin package can now be installed using ${GREEN}${BOLD}${ITALIC}$install_cmd webmin${NORMAL} command."
+fi
 
-sudo curl -o setup-repos.sh https://raw.githubusercontent.com/webmin/webmin/master/setup-repos.sh
-sudo sh setup-repos.sh
 
 sudo apt-get update
 sudo apt-get install webmin -y
 
-rm setup-repos.sh