Task

Verify that a file called     input.txt     and   a directory called     docs     exist.



This should be done twice:  

   once for the current working directory,   and
   once for a file and a directory in the filesystem root.


Optional criteria (May 2015):   verify it works with:

   zero-length files
   an unusual filename:     `Abdu'l-Bahá.txt  


 
function exists (filename) {
    return stat (filename) != null
}
 
exists ("input.txt")
exists ("/input.txt")
exists ("docs")
exists ("/docs")
 
 