# Load the IO module
# Replace "<pathToIO.lm>" with the location where the io.lm Lang module was installed to without "<" and ">"
ln.loadModule(<pathToIO.lm>)

$file1 = [[io]]::fp.openFile(input.txt)
fn.println([[io]]::fp.getSize($file1))
[[io]]::fp.closeFile($file1) # Remember to close files

$file2 = [[io]]::fp.openFile(/input.txt)
fn.println([[io]]::fp.getSize($file2))
[[io]]::fp.closeFile($file2)