A related program is www.cronolog.org . You might be able to use a command line like this one instead of writing any code:
cat /dev/ttyS0 | cronolog /logs/serial_data_%Y-%m-%d

[download]
The above line will automatically create one log file per day and date-stamp it with the format YYYY-MM-DD .

In reply to Re^2: Persistent logging... by superfrink
in thread Persistent logging... by salonmonk

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