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  


@load "filefuncs"
 
function exists(name    ,fd) {
    if ( stat(name, fd) == -1)
      print name " doesn't exist"
    else
      print name " exists"
}
BEGIN {
    exists("input.txt")
    exists("/input.txt")
    exists("docs")
    exists("/docs")
}