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Apply Google shell style guide conventions

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This commit is contained in:
Dan Schaper 2016-10-07 18:17:48 -07:00
parent 27a15f0567
commit 10ad32de9b
1 changed files with 128 additions and 130 deletions
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258
automated install/basic-install.sh
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@ -45,8 +45,7 @@ echo ":::"
if [[ $EUID -eq 0 ]];then if [[ $EUID -eq 0 ]];then
echo "::: You are root." echo "::: You are root."
else else
echo "::: sudo will be used for the install." # Check if sudo is actually installed
# Check if it is actually installed
# If it isn't, exit because the install cannot complete # If it isn't, exit because the install cannot complete
if [ -x "$(command -v sudo)" ];then if [ -x "$(command -v sudo)" ];then
export SUDO="sudo" export SUDO="sudo"
@ -54,6 +53,7 @@ else
echo "::: sudo is needed for the Web interface to run pihole commands. Please run this script as root and it will be automatically installed." echo "::: sudo is needed for the Web interface to run pihole commands. Please run this script as root and it will be automatically installed."
exit 1 exit 1
fi fi
echo "::: sudo utility found and will be used for the install."
fi fi
# Compatibility # Compatibility
@ -80,7 +80,7 @@ if [ -x "$(command -v apt-get)" ];then
LIGHTTPD_CFG="lighttpd.conf.debian" LIGHTTPD_CFG="lighttpd.conf.debian"
package_check() { package_check() {
# Returns 0 if package found locally, non-zero if package missing # Returns 0 if package found locally, non-zero if package missing
dpkg-query -W "$1" 2>/dev/null dpkg-query -W "$1" 2>&1 > /dev/null
} }
elif [ -x "$(command -v rpm)" ];then elif [ -x "$(command -v rpm)" ];then
# Fedora Family # Fedora Family
@ -123,7 +123,7 @@ spinner()
printf " \b\b\b\b" printf " \b\b\b\b"
} }
findIPRoute() { find_IPv4_route() {
# Find IP used to route to outside world # Find IP used to route to outside world
IPv4dev=$(ip route get 8.8.8.8 | awk '{for(i=1;i<=NF;i++)if($i~/dev/)print $(i+1)}') IPv4dev=$(ip route get 8.8.8.8 | awk '{for(i=1;i<=NF;i++)if($i~/dev/)print $(i+1)}')
IPv4addr=$(ip -o -f inet addr show dev "$IPv4dev" | awk '{print $4}' | awk 'END {print}') IPv4addr=$(ip -o -f inet addr show dev "$IPv4dev" | awk '{print $4}' | awk 'END {print}')
@ -132,7 +132,7 @@ findIPRoute() {
} }
welcomeDialogs() { welcome_dialogs() {
# Display the welcome dialog # Display the welcome dialog
whiptail --msgbox --backtitle "Welcome" --title "Pi-hole automated installer" "This installer will transform your Raspberry Pi into a network-wide ad blocker!" ${r} ${c} whiptail --msgbox --backtitle "Welcome" --title "Pi-hole automated installer" "This installer will transform your Raspberry Pi into a network-wide ad blocker!" ${r} ${c}
@ -146,7 +146,7 @@ In the next section, you can choose to use your current network settings (DHCP)
} }
verifyFreeDiskSpace() { verify_free_disk_space() {
# 50MB is the minimum space needed (45MB install (includes web admin bootstrap/jquery libraries etc) + 5MB one day of logs.) # 50MB is the minimum space needed (45MB install (includes web admin bootstrap/jquery libraries etc) + 5MB one day of logs.)
# - Fourdee: Local ensures the variable is only created, and accessible within this function/void. Generally considered a "good" coding practice for non-global variables. # - Fourdee: Local ensures the variable is only created, and accessible within this function/void. Generally considered a "good" coding practice for non-global variables.
@ -179,7 +179,7 @@ verifyFreeDiskSpace() {
} }
chooseInterface() { choose_interface() {
# Turn the available interfaces into an array so it can be used with a whiptail dialog # Turn the available interfaces into an array so it can be used with a whiptail dialog
interfacesArray=() interfacesArray=()
firstLoop=1 firstLoop=1
@ -208,16 +208,21 @@ chooseInterface() {
echo "::: Cancel selected, exiting...." echo "::: Cancel selected, exiting...."
exit 1 exit 1
fi fi
} }
use4andor6() { whiptail_IPv6_address() {
# Show the IPv6 address used for blocking
IPv6addr=$(ip -6 route get 2001:4860:4860::8888 | awk -F " " '{ for(i=1;i<=NF;i++) if ($i == "src") print $(i+1) }')
whiptail --msgbox --backtitle "IPv6..." --title "IPv6 Supported" "$IPv6addr will be used to block ads." ${r} ${c}
}
use_IPv4_and_or_IPv6() {
# Let use select IPv4 and/or IPv6 # Let use select IPv4 and/or IPv6
cmd=(whiptail --separate-output --checklist "Select Protocols (press space to select)" ${r} ${c} 2) cmd=(whiptail --separate-output --checklist "Select Protocols (press space to select)" ${r} ${c} 2)
options=(IPv4 "Block ads over IPv4" on options=(IPv4 "Block ads over IPv4" on
IPv6 "Block ads over IPv6" off) IPv6 "Block ads over IPv6" off)
choices=$("${cmd[@]}" "${options[@]}" 2>&1 >/dev/tty) choices=$("${cmd[@]}" "${options[@]}" 2>&1 >/dev/tty)
if [[ $? = 0 ]];then if [[ $? -eq 0 ]];then
for choice in ${choices} for choice in ${choices}
do do
case ${choice} in case ${choice} in
@ -226,25 +231,25 @@ use4andor6() {
esac esac
done done
if [ ${useIPv4} ] && [ ! ${useIPv6} ]; then if [[ "${useIPv4}" ]] && [[ ! "${useIPv6}" ]]; then
getStaticIPv4Settings get_static_IPv4_settings
setStaticIPv4 set_static_IPv4
echo "::: Using IPv4 on $IPv4addr" echo "::: IPv4 address: $IPv4addr"
echo "::: IPv6 will NOT be used." echo "::: IPv6 address: NOT USED."
fi fi
if [ ! ${useIPv4} ] && [ ${useIPv6} ]; then if [[ ! "${useIPv4}" ]] && [[ "${useIPv6}" ]]; then
useIPv6dialog whiptail_IPv6_address
echo "::: IPv4 will NOT be used." echo "::: IPv4 address: NOT USED."
echo "::: Using IPv6 on $piholeIPv6" echo "::: IPv6 address: $IPv6addr"
fi fi
if [ ${useIPv4} ] && [ ${useIPv6} ]; then if [[ "${useIPv4}" ]] && [[ "${useIPv6}" ]]; then
getStaticIPv4Settings get_static_IPv4_settings
setStaticIPv4 set_static_IPv4
useIPv6dialog whiptail_IPv6_address
echo "::: Using IPv4 on $IPv4addr" echo "::: IPv4 address: $IPv4addr"
echo "::: Using IPv6 on $piholeIPv6" echo "::: IPv6 address: $IPv6addr"
fi fi
if [ ! ${useIPv4} ] && [ ! ${useIPv6} ]; then if [[ ! "${useIPv4}" ]] && [[ ! "${useIPv6}" ]]; then
echo "::: Cannot continue, neither IPv4 or IPv6 selected" echo "::: Cannot continue, neither IPv4 or IPv6 selected"
echo "::: Exiting" echo "::: Exiting"
exit 1 exit 1
@ -256,13 +261,7 @@ use4andor6() {
fi fi
} }
useIPv6dialog() { get_static_IPv4_settings() {
# Show the IPv6 address used for blocking
piholeIPv6=$(ip -6 route get 2001:4860:4860::8888 | awk -F " " '{ for(i=1;i<=NF;i++) if ($i == "src") print $(i+1) }')
whiptail --msgbox --backtitle "IPv6..." --title "IPv6 Supported" "$piholeIPv6 will be used to block ads." ${r} ${c}
}
getStaticIPv4Settings() {
# Ask if the user wants to use DHCP settings as their static IP # Ask if the user wants to use DHCP settings as their static IP
if (whiptail --backtitle "Calibrating network interface" --title "Static IP Address" --yesno "Do you want to use your current network settings as a static address? if (whiptail --backtitle "Calibrating network interface" --title "Static IP Address" --yesno "Do you want to use your current network settings as a static address?
IP address: $IPv4addr IP address: $IPv4addr
@ -313,7 +312,7 @@ It is also possible to use a DHCP reservation, but if you are going to do that,
fi fi
} }
setDHCPCD() { set_dhcpcd() {
# Append these lines to dhcpcd.conf to enable a static IP # Append these lines to dhcpcd.conf to enable a static IP
echo "## interface $piholeInterface echo "## interface $piholeInterface
static ip_address=$IPv4addr static ip_address=$IPv4addr
@ -321,13 +320,13 @@ setDHCPCD() {
static domain_name_servers=$IPv4gw" | ${SUDO} tee -a /etc/dhcpcd.conf >/dev/null static domain_name_servers=$IPv4gw" | ${SUDO} tee -a /etc/dhcpcd.conf >/dev/null
} }
setStaticIPv4() { set_static_IPv4() {
if [[ -f /etc/dhcpcd.conf ]];then if [[ -f /etc/dhcpcd.conf ]];then
# Debian Family # Debian Family
if grep -q "$IPv4addr" /etc/dhcpcd.conf; then if grep -q "$IPv4addr" /etc/dhcpcd.conf; then
echo "::: Static IP already configured" echo "::: Static IP already configured"
else else
setDHCPCD set_dhcpcd
${SUDO} ip addr replace dev "$piholeInterface" "$IPv4addr" ${SUDO} ip addr replace dev "$piholeInterface" "$IPv4addr"
echo ":::" echo ":::"
echo "::: Setting IP to $IPv4addr. You may need to restart after the install is complete." echo "::: Setting IP to $IPv4addr. You may need to restart after the install is complete."
@ -387,7 +386,7 @@ function valid_ip()
return ${stat} return ${stat}
} }
setDNS(){ set_upstream_dns(){
DNSChoseCmd=(whiptail --separate-output --radiolist "Select Upstream DNS Provider. To use your own, select Custom." ${r} ${c} 6) DNSChoseCmd=(whiptail --separate-output --radiolist "Select Upstream DNS Provider. To use your own, select Custom." ${r} ${c} 6)
DNSChooseOptions=(Google "" on DNSChooseOptions=(Google "" on
OpenDNS "" off OpenDNS "" off
@ -478,7 +477,7 @@ setDNS(){
fi fi
} }
versionCheckDNSmasq(){ version_check_dnsmasq(){
# Check if /etc/dnsmasq.conf is from pihole. If so replace with an original and install new in .d directory # Check if /etc/dnsmasq.conf is from pihole. If so replace with an original and install new in .d directory
dnsFile1="/etc/dnsmasq.conf" dnsFile1="/etc/dnsmasq.conf"
dnsFile2="/etc/dnsmasq.conf.orig" dnsFile2="/etc/dnsmasq.conf.orig"
@ -523,7 +522,7 @@ versionCheckDNSmasq(){
${SUDO} sed -i 's/^#conf-dir=\/etc\/dnsmasq.d$/conf-dir=\/etc\/dnsmasq.d/' ${dnsFile1} ${SUDO} sed -i 's/^#conf-dir=\/etc\/dnsmasq.d$/conf-dir=\/etc\/dnsmasq.d/' ${dnsFile1}
} }
installScripts() { install_scripts() {
# Install the scripts from /etc/.pihole to their various locations # Install the scripts from /etc/.pihole to their various locations
echo ":::" echo ":::"
echo -n "::: Installing scripts to /opt/pihole..." echo -n "::: Installing scripts to /opt/pihole..."
@ -549,11 +548,11 @@ installScripts() {
echo " done." echo " done."
} }
installConfigs() { install_configs() {
# Install the configs from /etc/.pihole to their various locations # Install the configs from /etc/.pihole to their various locations
echo ":::" echo ":::"
echo "::: Installing configs..." echo "::: Installing configs..."
versionCheckDNSmasq version_check_dnsmasq
if [ ! -d "/etc/lighttpd" ]; then if [ ! -d "/etc/lighttpd" ]; then
${SUDO} mkdir /etc/lighttpd ${SUDO} mkdir /etc/lighttpd
${SUDO} chown "$USER":root /etc/lighttpd ${SUDO} chown "$USER":root /etc/lighttpd
@ -566,7 +565,7 @@ installConfigs() {
${SUDO} chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /var/cache/lighttpd/compress ${SUDO} chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /var/cache/lighttpd/compress
} }
stopServices() { stop_service() {
# Stop dnsmasq and lighttpd # Stop dnsmasq and lighttpd
echo ":::" echo ":::"
echo -n "::: Stopping services..." echo -n "::: Stopping services..."
@ -579,13 +578,14 @@ stopServices() {
echo " done." echo " done."
} }
installPackages() { install_packages() {
# accepts an array as argument
declare -a argArray1=("${!1}") declare -a argArray1=("${!1}")
for i in "${argArray1[@]}"; do for i in "${argArray1[@]}"; do
echo -n "::: Checking for $i..." echo -n "::: Checking for $i..."
package_check "${i}" > /dev/null package_check "${i}"
if ! [ "$?" -eq 0 ]; then if ! [[ "$?" -eq 0 ]]; then
echo -n " Not found! Installing...." echo -n " Not found! Installing...."
${SUDO} ${PKG_INSTALL} "$i" > /dev/null 2>&1 ${SUDO} ${PKG_INSTALL} "$i" > /dev/null 2>&1
echo " done!" echo " done!"
@ -593,19 +593,18 @@ installPackages() {
echo " already installed!" echo " already installed!"
fi fi
done done
} }
installerDependencies() { installer_dependencies() {
#Running apt-get update/upgrade with minimal output can cause some issues with #Running apt-get update/upgrade with minimal output can cause some issues with
#requiring user input (e.g password for phpmyadmin see #218) #requiring user input (e.g password for phpmyadmin see #218)
#We'll change the logic up here, to check to see if there are any updates availible and #We'll change the logic up here, to check to see if there are any updates availible and
# if so, advise the user to run apt-get update/upgrade at their own discretion # if so, advise the user to run apt-get update/upgrade at their own discretion
#Check to see if apt-get update has already been run today #Check to see if package manager update has already been run today
# it needs to have been run at least once on new installs! # it needs to have been run at least once on new installs!
timestamp=$(stat -c %Y ${PKG_CACHE}) timestamp=$(stat -c %Y ${PKG_CACHE})
timestampAsDate=$(date -d @"$timestamp" "+%b %e") timestampAsDate=$(date -d @"$timestamp" "+%b %e")
@ -632,16 +631,16 @@ installerDependencies() {
fi fi
echo ":::" echo ":::"
echo "::: Checking installer dependencies..." echo "::: Checking installer dependencies..."
installPackages INSTALLER_DEPS[@] install_packages INSTALLER_DEPS[@]
} }
checkForDependencies() { check_dependencies() {
# Install dependencies for Pi-Hole # Install dependencies for Pi-Hole
echo "::: Checking Pi-Hole dependencies:" echo "::: Checking Pi-Hole dependencies:"
installPackages PIHOLE_DEPS[@] install_packages PIHOLE_DEPS[@]
} }
getGitFiles() { setup_local_repos() {
# Setup git repos for base files and web admin # Setup git repos for base files and web admin
echo ":::" echo ":::"
echo "::: Checking for existing base files..." echo "::: Checking for existing base files..."
@ -693,8 +692,7 @@ update_repo() {
echo " done!" echo " done!"
} }
create_log_file() {
CreateLogFile() {
# Create logfiles if necessary # Create logfiles if necessary
echo ":::" echo ":::"
echo -n "::: Creating log file and changing owner to dnsmasq..." echo -n "::: Creating log file and changing owner to dnsmasq..."
@ -708,7 +706,7 @@ CreateLogFile() {
fi fi
} }
installPiholeWeb() { install_admin_web() {
# Install the web interface # Install the web interface
echo ":::" echo ":::"
echo -n "::: Installing pihole custom index page..." echo -n "::: Installing pihole custom index page..."
@ -732,7 +730,7 @@ installPiholeWeb() {
echo " done!" echo " done!"
} }
installCron() { install_cron() {
# Install the cron job # Install the cron job
echo ":::" echo ":::"
echo -n "::: Installing latest Cron script..." echo -n "::: Installing latest Cron script..."
@ -740,8 +738,8 @@ installCron() {
echo " done!" echo " done!"
} }
runGravity() { run_gravity() {
# Rub gravity.sh to build blacklists # Run gravity.sh to build blacklists
echo ":::" echo ":::"
echo "::: Preparing to run gravity.sh to refresh hosts..." echo "::: Preparing to run gravity.sh to refresh hosts..."
if ls /etc/pihole/list* 1> /dev/null 2>&1; then if ls /etc/pihole/list* 1> /dev/null 2>&1; then
@ -752,7 +750,7 @@ runGravity() {
${SUDO} /opt/pihole/gravity.sh ${SUDO} /opt/pihole/gravity.sh
} }
setUser(){ set_user(){
# Check if user pihole exists and create if not # Check if user pihole exists and create if not
echo "::: Checking if user 'pihole' exists..." echo "::: Checking if user 'pihole' exists..."
if id -u pihole > /dev/null 2>&1; then if id -u pihole > /dev/null 2>&1; then
@ -763,7 +761,7 @@ setUser(){
fi fi
} }
configureFirewall() { configure_firewall() {
# Allow HTTP and DNS traffic # Allow HTTP and DNS traffic
if [ -x "$(command -v firewall-cmd)" ]; then if [ -x "$(command -v firewall-cmd)" ]; then
${SUDO} firewall-cmd --state > /dev/null ${SUDO} firewall-cmd --state > /dev/null
@ -784,64 +782,7 @@ configureFirewall() {
fi fi
} }
finalExports() { configure_SELinux() {
#If it already exists, lets overwrite it with the new values.
if [[ -f ${setupVars} ]];then
${SUDO} rm ${setupVars}
fi
${SUDO} echo "piholeInterface=${piholeInterface}" >> ${setupVars}
${SUDO} echo "IPv4addr=${IPv4addr}" >> ${setupVars}
${SUDO} echo "piholeIPv6=${piholeIPv6}" >> ${setupVars}
${SUDO} echo "piholeDNS1=${piholeDNS1}" >> ${setupVars}
${SUDO} echo "piholeDNS2=${piholeDNS2}" >> ${setupVars}
}
installPihole() {
# Install base files and web interface
checkForDependencies # done
stopServices
setUser
if [ ! -d "/var/www/html" ]; then
${SUDO} mkdir -p /var/www/html
fi
${SUDO} chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /var/www/html
${SUDO} chmod 775 /var/www/html
${SUDO} usermod -a -G ${LIGHTTPD_GROUP} pihole
if [ -x "$(command -v lighty-enable-mod)" ]; then
${SUDO} lighty-enable-mod fastcgi fastcgi-php > /dev/null
else
printf "\n:::\tWarning: 'lighty-enable-mod' utility not found. Please ensure fastcgi is enabled if you experience issues.\n"
fi
getGitFiles
installScripts
installConfigs
CreateLogFile
configureSelinux
installPiholeWeb
installCron
runGravity
configureFirewall
finalExports
}
updatePihole() {
# Install base files and web interface
checkForDependencies # done
stopServices
getGitFiles
installScripts
installConfigs
CreateLogFile
configureSelinux
installPiholeWeb
installCron
runGravity
configureFirewall
}
configureSelinux() {
if [ -x "$(command -v getenforce)" ]; then if [ -x "$(command -v getenforce)" ]; then
printf "\n::: SELinux Detected\n" printf "\n::: SELinux Detected\n"
printf ":::\tChecking for SELinux policy development packages..." printf ":::\tChecking for SELinux policy development packages..."
@ -872,12 +813,69 @@ configureSelinux() {
fi fi
} }
final_exports() {
#If it already exists, lets overwrite it with the new values.
if [[ -f ${setupVars} ]];then
${SUDO} rm ${setupVars}
fi
${SUDO} echo "piholeInterface=${piholeInterface}" >> ${setupVars}
${SUDO} echo "IPv4addr=${IPv4addr}" >> ${setupVars}
${SUDO} echo "piholeIPv6=${IPv6addr}" >> ${setupVars}
${SUDO} echo "piholeDNS1=${piholeDNS1}" >> ${setupVars}
${SUDO} echo "piholeDNS2=${piholeDNS2}" >> ${setupVars}
}
install() {
# Install base files and web interface
check_dependencies # done
stop_service
set_user
if [ ! -d "/var/www/html" ]; then
${SUDO} mkdir -p /var/www/html
fi
${SUDO} chown ${LIGHTTPD_USER}:${LIGHTTPD_GROUP} /var/www/html
${SUDO} chmod 775 /var/www/html
${SUDO} usermod -a -G ${LIGHTTPD_GROUP} pihole
if [ -x "$(command -v lighty-enable-mod)" ]; then
${SUDO} lighty-enable-mod fastcgi fastcgi-php > /dev/null
else
printf "\n:::\tWarning: 'lighty-enable-mod' utility not found. Please ensure fastcgi is enabled if you experience issues.\n"
fi
setup_local_repos
install_scripts
install_configs
create_log_file
configure_SELinux
install_admin_web
install_cron
run_gravity
configure_firewall
final_exports
}
update() {
# Install base files and web interface
check_dependencies # done
stop_service
setup_local_repos
install_scripts
install_configs
create_log_file
configure_SELinux
install_admin_web
install_cron
run_gravity
configure_firewall
}
displayFinalMessage() { displayFinalMessage() {
# Final completion message to user # Final completion message to user
whiptail --msgbox --backtitle "Make it so." --title "Installation Complete!" "Configure your devices to use the Pi-hole as their DNS server using: whiptail --msgbox --backtitle "Make it so." --title "Installation Complete!" "Configure your devices to use the Pi-hole as their DNS server using:
IPv4: ${IPv4addr%/*} IPv4: ${IPv4addr%/*}
IPv6: $piholeIPv6 IPv6: $IPv6addr
If you set a new IP address, you should restart the Pi. If you set a new IP address, you should restart the Pi.
@ -910,7 +908,7 @@ updateDialogs(){
} }
######## SCRIPT ############ ######## MAIN MAIN MAIN ########
if [[ -f ${setupVars} ]];then if [[ -f ${setupVars} ]];then
. ${setupVars} . ${setupVars}
@ -928,27 +926,27 @@ if [[ $1 = "--i_do_not_follow_recommendations" ]]; then
echo "::: --i_do_not_follow_recommendations passed to script" echo "::: --i_do_not_follow_recommendations passed to script"
echo "::: skipping free disk space verification!" echo "::: skipping free disk space verification!"
else else
verifyFreeDiskSpace verify_free_disk_space
fi fi
# Install packages used by this installation script # Install packages used by this installation script
installerDependencies installer_dependencies
if [[ ${useUpdateVars} == false ]]; then if [[ ${useUpdateVars} == false ]]; then
welcomeDialogs welcome_dialogs
${SUDO} mkdir -p /etc/pihole/ ${SUDO} mkdir -p /etc/pihole/
# Find IP used to route to outside world # Find IP used to route to outside world
findIPRoute find_IPv4_route
# Find interfaces and let the user choose one # Find interfaces and let the user choose one
chooseInterface choose_interface
# Let the user decide if they want to block ads over IPv4 and/or IPv6 # Let the user decide if they want to block ads over IPv4 and/or IPv6
use4andor6 use_IPv4_and_or_IPv6
# Decide what upstream DNS Servers to use # Decide what upstream DNS Servers to use
setDNS set_upstream_dns
# Install and log everything to a file # Install and log everything to a file
installPihole | tee ${tmpLog} install | tee ${tmpLog}
else else
updatePihole | tee ${tmpLog} update | tee ${tmpLog}
fi fi
# Move the log file into /etc/pihole for storage # Move the log file into /etc/pihole for storage
@ -976,7 +974,7 @@ echo ":::"
if [[ ${useUpdateVars} == false ]]; then if [[ ${useUpdateVars} == false ]]; then
echo "::: Installation Complete! Configure your devices to use the Pi-hole as their DNS server using:" echo "::: Installation Complete! Configure your devices to use the Pi-hole as their DNS server using:"
echo "::: ${IPv4addr%/*}" echo "::: ${IPv4addr%/*}"
echo "::: $piholeIPv6" echo "::: $IPv6addr"
echo ":::" echo ":::"
echo "::: If you set a new IP address, you should restart the Pi." echo "::: If you set a new IP address, you should restart the Pi."
else else