update-all-machines

#!/bin/bash

# tmux new -d -s "update-all"

MACHINES="europa.local io.local ganymede.local callisto.local titan.local phobos.local pi-hole.local"
DEAD=0

# all machines alive?
echo "check whether all systems are alive"
for node in $MACHINES
do
  if ping -W 1 -c 1 $node > /dev/null
  then
    echo "$node is alive"
  else
    DEAD=1
  fi
done

if [ "$DEAD" == "1" ]
then
  read -p "Do you want to continue anyway? (y/n)" yn
  case $yn in
    [Yy]* ) echo "Let's go then"
            break;;
    [Nn]* ) echo "Go fix your stuff and try again"
            exit;;
  esac
fi

for node in $MACHINES
do
  echo -ne "\033]0;updating $node\007"
  echo '************************************'
  echo "         $node"
  echo '************************************'
  echo connecting ...
  ssh $node "uname -a ; sudo apt-get update ; sudo apt-get -y upgrade ; sudo apt-get -y dist-upgrade ; sudo apt-get -y autoremove" 
  echo '************************************'
  echo "         $node done"
  echo '************************************'
done

echo '************************************'
echo "         pihole -up"
echo '************************************'
ssh steffenr@pi-hole.local "sudo pihole -up"