Synopsis:
   $fsize(<file>)

Technical:
   This function attempts to determine the size of the given file.  Tilde-
   expansion is permitted.

Practical:
   This function is used to get the size of a file.  This can be useful
   for seeing is a file exists, but has a zero length.

Returns:
     -1   file does not exists, or no read access
   > -1   size of file

See Also:
   fexist(6)