getImagePlusInfo.groovy

import ij.*
import ij.plugin.Duplicator
import ij.io.FileSaver

/**
 * 
 * Here is a groovy script which:
 * 	- Gets information about the current ImagePlus File (via imp.getOriginalFileInfo()),
 * 	- Retrieves its directory
 * 	- Creates an output subfolder
 *  - Saves an output file
 * 
 *  WORKS both with an open image or with the “Batch” command from the script editor !!!
 * 
 */

 
#@ImagePlus imp 
//imp.show() // optional

// get some info about the image
def info = imp.getOriginalFileInfo()

def dir  = info.directory
def fileName = info.fileName


// create an output dire ,and prepare output file path
def output_dir = new File( dir , "output" )
output_dir.mkdirs()
def output_path = new File ( output_dir , "firstSlice_" + fileName  )

// Do something, here duplicate first slice
def first_slice = new Duplicator().run(imp, 1, 1, 1, 1, 1, 1);

// save file
def fs = new FileSaver(first_slice)
fs.saveAsTiff(output_path.toString() )