post_install() {
  printf "$(tput setaf 4)Java Design Patterns has been installed into /opt/java-design-patterns$(tput sgr0)\n"
  printf "$(tput setaf 4)This folder has root permissions, so keep in mind you will not be able to modify anything in this directory.$(tput sgr0)\n"
  printf "$(tput setaf 4)$(tput sgr0)\n"
  printf "$(tput setaf 4)If you intend to modify it as regular user, change folder's owner as follow:$(tput sgr0)\n"
  printf "$(tput setaf 2)chown -R <user>:<user> /opt/java-design-patterns$(tput sgr0)\n"
  printf "$(tput setaf 4)Note: You can copy the folder to a user writable destination in order to preserve$(tput sgr0)\n"
  printf "$(tput setaf 4)the original sources and permissions and avoid the deletion of files on upgrades.$(tput sgr0)\n"
}

post_upgrade() {
  post_install
}

post_remove() {
  printf "$(tput setaf 4)If you had added/modified files or permissions in folder $(tput setaf 2)/opt/java-design-patterns$(tput sgr0)\n"
  printf "$(tput setaf 4)is possible you need to delete the folder manually.$(tput sgr0)\n"
}