$ pm_1203774_file_io_basics.pl 1 2 3
'pm_1203774_transient_data' not found.
'pm_1203774_transient_data' exists.
Record 1: A
Record 2: B
Record 3: C
No. of records: 26
'pm_1203774_transient_data' exists.
'pm_1203774_transient_data' not found.