init.pp

class system {

	$packages = [
		'chrony',
		'sudo',
		'lsof',
		'vim',
		'screen',
		'rsync',
		'tcpdump',
		'pv',
		'openssh-server',
		'locales-all',
	]
  
	package { $packages:
		ensure => installed,
	}	

}