如何在Mac OS X上运行的单个bash脚本中，定期将一组数据库表从psql数据库转储到本地计算机？

Question

I tried this but it does not work.

#!/bin/bash

TABLENAMES="user_stats"
ssh -t railsapps@xxx.xxx.xxx.xx -p xxx bash -c "'

for TABLENAME in $TABLENAMES
do
    psql -d mydb -P format=unaligned -P tuples_only -P fieldsep=\, -c "SELECT * FROM $TABLENAME" > /tmp/$TABLENAME  
done
'"

Answer 1

You should use the Postgres COPY command, and stuff them all in to a single sql file, that you then run with psql . Then you can take that script and either feed it to cron on Mac OS X, or launchd to run the script periodically.