update-fedora

update-fedora

#!/bin/bash

batch_mode=false
suggest_rawhide=false

synopsis() {
  tput bold
  echo "USAGE"
  tput sgr0
  echo "       update-fedora [-y] [-r]"
  echo
  tput bold
  echo "OPTIONS"
  tput sgr0
  echo "       -y"
  echo "              Batch mode. Never reboot the system."
  echo "              Never check for system upgrades."
  echo "       -r"
  echo "              Suggest rawhide if applicable."
}

show_interactive_help() {
  echo "  s - show available updates"
  echo "  o - prepare offline update"
  echo "  u - regular update (no reboot)"
  echo "  q - quit"
  echo "  h - help"
}

release_type() {
  sed -n -E 's/^RELEASE_TYPE=(\S+)/\1/p' /etc/os-release
}

os_release() {
  sed -n -E 's/^VERSION_ID=(\S+)/\1/p' /etc/os-release
}

target_release() {
  local result
  local current=$(os_release)
  if [[ $(release_type) != "stable" ]]; then
    echo $current
    return 0
  fi
  local metainfo=/usr/share/metainfo/org.fedoraproject.fedora.metainfo.xml
  if [[ -f $metainfo ]]; then
    result=$(xmllint --xpath "/component/releases//release[@type='stable']/@version" $metainfo | \
      sed -n -E 's/.*[=]["]([0-9]+)["].*/\1/p' | \
      sort -rn | \
      head -1)
  else
    result=$(curl -s "https://fedoraproject.org/releases.json" | \
      jq -r ".[]|select( .arch == \"$(uname -m)\") |.version" | \
      sort -rn | \
      head -1)
  fi
  if (( result >= current )); then
    echo $result
  else
    echo $current
  fi
}

is_update_prepared() {
  sudo dnf offline status | grep -F -q "offline reboot"
}

check_updates_available() {
  [[ $(dnf check-update --refresh 2> /dev/null) ]]
}

system_update() {
  local target=$1
  sudo dnf -y system-upgrade download --releasever=$target && {
    read -p "A system update is prepared. Would you like to reboot right now? [y/N] "
    [[ $REPLY =~ [yY] ]] && sudo dnf -y offline reboot
  }
}

update_apply() {
  sudo dnf -y update --refresh
}

offline_prepare() {
  sudo dnf -y update --refresh --offline && {
    read -p "An update is prepared. Would you like to reboot right now? [y/N] "
    [[ $REPLY =~ [yY] ]] && sudo dnf -y offline reboot
  }
}

default_action() {
  local opt options
  options=$(getopt -o "yrh" -- "$@")
  (( $? == 0 )) || {
    synopsis
    return 1
  }
  for opt in $options; do
    case $opt in
      -y)
        batch_mode=true
        ;;
      -r)
        suggest_rawhide=true
        ;;
      -h)
        synopsis
        return 0
        ;;
      --)
        ;;
      *)
        echo "Unknown parameter: $opt"
        synopsis
        return 1
        ;;
    esac
  done
  if is_update_prepared; then
    $batch_mode && {
      echo "An update is prepared. Please disable batch mode and try again."
      return 1
    }
    read -p "An update is prepared. Would you like to reboot right now? [y/N] "
    [[ $REPLY =~ [yY] ]] && sudo dnf -y offline reboot
    return 0
  fi
  check_updates_available && {
    if $batch_mode; then
      update_apply
      return 0
    fi
    while true; do
      read -p "An update is available. Press \"h\" for help. [s]how [o]ffline [u]update [q]uit ? "
      case $REPLY in
        s)
          dnf check-update
          ;;
        o)
          offline_prepare
          return 0
          ;;
        u)
          update_apply
          return 0
          ;;
        q)
          return 0
          ;;
        h)
          show_interactive_help
          ;;
      esac
    done
  }
  echo "The system is up-to-date."
  $batch_mode && {
    echo "Disable batch mode to check for system updates."
    return 0
  }
  local current=$(os_release)
  local target=$(target_release)
  if (( current == target )); then
    if $suggest_rawhide && [[ $(release_type) = "stable" ]]; then
      read -p "Would you like to upgrade to rawhide? [y/N] "
      [[ $REPLY =~ [yY] ]] && system_update rawhide
    fi
  else
    echo "A system update to fedora $(( current + 1 )) is available."
    read -p "Would you like to download it now? [y/N] "
    [[ $REPLY =~ [yY] ]] && system_update $(( current + 1 ))
  fi
  return 0
}

return 2> /dev/null || {
  default_action "$@"
  exit $?
}

Keeping fedora updated is a bit hard. It's not a rolling distro, unless you use rawhide. This script simplifies the task, because it knows when to do the system-update. I keep it in ~/.local/bin/update-fedora and run it frequently. I also like to disable the notifications from Discover.