1. curl -L https://get.rvm.io | bash -s stable –ruby

2. sudo apt-get install zlib1g-dev

3. rvm reinstall 1.9.2-p180

$ rvm reinstall 1.9.3

apt-get install libsqlite3-dev

sudo apt-get install libssl-dev

Than go to the source of ruby and go to the following path

cd ext/openssl

sudo apt-get install libssl-dev

Than go to the source of ruby and go to the following path

cd ext/openssl

Run the command one after the others.

ruby extconf.rb
make
sudo make install

Deffered: grep status=deferred /var/log/mail.log | awk {‘print $7’} | sort -u | wc -l
15
Bounced: grep status=bounced /var/log/mail.log | grep -v info | awk {‘print $7’} | wc -l
39
Sent: grep status=sent /var/log/mail.log | awk {‘print $7’} | grep -v root | grep -v alfred | wc -l
31