System update script

update-system.sh

#!/bin/bash

# get the updates
sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade && sudo apt autoremove && sudo apt-get autoremove

# fix anything that went wrong
sudo apt install -f

# cursed distribution methods
sudo snap refresh
flatpak update

# update AppImages (extra-cursed)
currentdir= pwd
cd ~/bin

ech="echo"
$ech "foo"

apptool="./appimageupdatetool-x86_64.AppImage"
#$apptool --self-update

apptoolname= basename $apptool

echo "apptoolname $apptoolname atn $apptool at"

echo "for loop"

files=(*.AppImage)
for file in "${files[@]}"; do
    appname= basename $file
    #echo "$appname"
    #if [ "$appname" != "$apptoolname" ] ; then # this isn't working
        #echo "$file"
        $apptool $file
    #fi
done
cd $currentdir # go back

# deal with zoom

should_check_zoom=false

last_checked=/tmp/zoom_last_checked

if test -e "$last_checked"; then
  
  # the file exists
  #check when file was created

  if test `find "$last_checked" -mmin +720` # 1440 = 24 hours
    then
        should_check_zoom=true
        rm $last_checked
  fi

else
  should_check_zoom=true
fi


if [ $should_check_zoom = true ]; then

  touch $last_checked
  
  echo "Checking Zoom versions."

  #update zoom
  ZOOM_DEB='zoom_amd64.deb'


  # check it we have the latest version
  version_installed=$(cat /opt/zoom/version.txt)
  version_available=$(wget --spider https://zoom.us/client/latest/zoom_amd64.deb 2>&1 | grep Location | sed -e 's/.*prod\/\(.*\)\/.*/\1/')

  # were we able to find out the latest version on the website?
  if [[ -n ${version_available} ]]; then

	echo "Zoom Installed: ${version_installed}"
	echo "Zoom Available: ${version_available}"

	# If we don't have the same version as the website, download and install the web's version
	if [[ "${version_installed}" == "${version_available}" ]]; then
  		echo "The latest Zoom version is already installed."
	else
  		curl -J -L -o /tmp/${ZOOM_DEB} https://www.zoom.us/client/latest/${ZOOM_DEB}

  		sudo apt-get install /tmp/${ZOOM_DEB}
  		
  		# fix anything that went wrong
		sudo apt install -f
		
		echo "Zoom updated"
	fi
  fi
  # done with zoom
fi

sudo do-release-upgrade

Now with app images, which I keep in ~/bin. This requires appimageupdatetool https://github.com/AppImageCommunity/AppImageUpdate/releases