{ ... }:
{
  text = ''
    # Recursively change permissions to allow read sharing with group and others.
    function perm_share() {
      find . -type d -exec chmod 755 {} \;; find . -type f -exec chmod 644 {} \;
    }

    # Recursively change permissions to restrict access for group and others.
    function perm() {
      find . -type d -exec chmod 700 {} \;; find . -type f -exec chmod 600 {} \;
    }
  '';
}