#!/bin/ash
count=$(apk -uU list | wc -l | tr -dc "0-9")
test $count -le 0 && echo "0 apk count=$count no packages available for upgrade" && exit 0
echo "1 apk" count=$count $count packages available for upgrade: $(apk -u list | cut -d " " -f1 | tr "\n" " ")
exit 1