multiple runs

[Franck Arnaud]

> You really can't run multiple louts in parallel, as they will be
> clobbering a shared database.

Ah yes, you'd need to delay the pipeline. There could be 
a solution: keeping the input file, and the database, in RAM 
and dumping them to stdout at the end of the process, and 
conversely on stdin. Would solve the problem of corrupted 
DBs with DBs existing only in memory.

Seems a bit overkill though, I think I'll live with a script.

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