backup your Postgres Database Server

Very easy trick, but useful at the same time, whether you need to backup your PostgreSQL database server just follow these steps:

1. su postgres

2. psql -l

3. pg_dumpall > allmypgdata.sql

Now, in case you have any doubts, to check the databases had been backed up just use this:

 grep "^[\]connect" allmypgdata.sql

You have to see all databases' names

That's all