initialize shared anonymous hash

key/value pairs

sub file_in file_out print("file_in is $param->{_file_in}\n"); path_out

sub file_out

print("file_out is $param->{_file_out}\n");

sub path_out

print("path_out is $param->{_path_out}\n");

sub param_names

print("param_names is $param->{_param_names}\n");

sub param_values

print("param_values is $param->{_param_values}\n");

open  and write 
to the file