Created
January 9, 2020 05:36
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test psql at specific ip:port
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| # ref. https://stackoverflow.com/a/59657648/248616 | |
| echo 'QUIT' | nc -w SECONDS YOUR_HOST PORT; echo $? | |
| # eg | |
| echo 'QUIT' | nc -w 1 localhost 5432; echo $? |
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