Check if database exists in PostgreSQL using shell
Note/Update (2021): While this answer works, philosophically I agree with other comments that the right way to do this is to ask Postgres. Check whether the other answers that have psql -c or --command in them are a better fit for your use case (e.g. Nicholas Grilly's, Nathan Osman's, bruce's or Pedro's variant I use the following modification of Arturo's solution: psql -lqt | cut -d \| -f 1 | gre
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