How to pass in password to pg_dump?

Question

I\'m trying to create a cronjob to back up my database every night before something catastrophic happens. It looks like this command should meet my needs:

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Answer 1

the easiest way in my opinion, this: you edit you main postgres config file: pg_hba.conf there you have to add the following line:

host 127.0.0.1/32 trust

and after this you need start you cron thus:

pg_dump -h 127.0.0.1 -U | gzip > /backup/db/$(date +%Y-%m-%d).psql.gz

and it worked without password