Send an email from the command line in Linux Ubuntu

Yes, it is possible to use the command line to send mails.

You will have to install the package mail

sudo apt-get mail

And the instructions to do it are in this well documented post:

http://www.simplehelp.net/2008/12/01/how-to-send-email-from-the-linux-command-line/

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Configuring Postgres Ubuntu

Following our previous post, we now explain how to access Postgres through the command line.

First a modification has to be made in the config files:

nano /etc/postgresql/9.1/main/pg_hba.conf

uncomment the line and put

local all username md5

Where username is the user you created

then restart:

sudo /etc/init.d/postgresql restart

now you will be able to access:

psql database_name username

and you will be requested to enter the password