grunt.loadNpmTasks('grunt-ftpress');

grunt.initConfig(
{
	ftpress:
	{
		name:
		{
			src:
			[
				'build'
			],
			dest: '.',
			options:
			{
				url: null,
				username: null,
				password: null,
				protocol: 'ftp',
				host: null,
				port: 21,
				commandArray:
				[
					'mirror {SOURCE} {TARGET} --reverse --delete-first --parallel=10 --use-pget-n=10',
					'exit'
				],
				debug: false,
				verbose: false,
				haltOnError: false,
				errorArray:
				[
					'Connection refused',
					'Not connected',
					'Permission denied'
				]
			}
		}
	}
});

command:
[
	'mirror {SOURCE} {TARGET}-new-{TIMESTAMP} --reverse --delete-first',
	'mv {TARGET} {TARGET}-old-{TIMESTAMP}',
	'mv {TARGET}-new-{TIMESTAMP} {TARGET}',
	'rm -rf {TARGET}-old-{TIMESTAMP}',
	'exit'
]