yum-updates-alert.sh.j2

#!/usr/bin/env bash
# vim: set ft=bash:

update_lc=$(journalctl --since "yesterday" -t yum | tail -n +2 | wc -l)

if [[ $update_lc -gt 0 ]]; then
  datestamp=$(date +%s)
  scratch_file="{{ scratch_path }}/update-alert-${datestamp}.txt"
  journalctl --since "yesterday" -t yum &> $scratch_file

  grep -i kernel $scratch_file
  restart_required=$?

  if [[ $restart_required -eq 0 ]]; then
    mail -Ssendwait -s "[Yum Updates Installed: RESTART]" \
      -r "{{ mg_smtp_username }}" "{{ mail_to }}" < $scratch_file
  else
    mail -Ssendwait -s "[Yum Updates Installed]" \
      -r "{{ mg_smtp_username }}" "{{ mail_to }}" < $scratch_file
  fi

  rm $scratch_file
else
  echo "FIN" | mail -Ssendwait -s "[No Updates Installed]" \
    -r "{{ mg_smtp_username }}" "{{ mail_to }}"
fi