NAME
	file_size - return the size of a file

SYNOPSIS
	int file_size(string path)

DESCRIPTION
	This function returns the size, in bytes, of an existing file. If the
	file does not exist, file_size returns -1.

	If the file is actually a directory and not a file, -2 will be
	returned.

SEE ALSO
	file_name

Help topics available:

_acl_debug	_acl_get	_acl_str2num	_acl_num2str	_file_stat
cat	ed	file_size	get_dir	log_file
mkdir	read_bytes	read_file	rm	rmdir
tail	write_bytes	write_file