These are the 4 libraries apart from standard library nltk are useful to analyze natural languages using python.

1) from corenlp import StanfordCoreNLP

github.com

2) from gensim.models import word2vec

github.com

3) import divisi2

github.com

4) from sklearn.naive_bayes import MultinomialNB

github.com

The cost of Aurora hosting per hour.

db.r3.large $0.290 (0.24 mysql)
db.r3.xlarge $0.580 (0.475 mysql)
db.r3.2xlarge $1.160 (0.945 mysql)
db.r3.4xlarge $2.320 (1.89 mysql)
db.r3.8xlarge $4.640 (3.78 mysql)

Mysql hosting starts with db.t2.micro at only $0.017 per hour.

It is possible to use password to connect to AWS

1) change config file
sudo vi /etc/ssh/sshd_config

PermitRootLogin yes
PasswordAuthentication yes

2) restart
sudo service ssh restart

3) add a password
sudo passwd root

4) ssh without key
ssh root@xxx.com

Steps to install innobackupex on Ubuntu:

$ apt-key adv --keyserver keys.gnupg.net --recv-keys 1C4CBDCDCD2EFD2A

Add this to /etc/apt/sources.list, replacing VERSION precise with the name of your distribution:

deb repo.percona.com precise main
deb-src repo.percona.com precise main

Remember to update the local cache:
$ apt-get update

Now you can install Percona XtraBackup with:
$ apt-get install percona-xtrabackup

BACKUP

innobackupex --user=USERNAME --password=PASSWORD --no-timestamp /data/backups/new_backup <--(PATH OF BACKUP)
innobackupex --apply-log /data/backups/new_backup

RESTORE

service mysql stop
mkdir /tmp/mysql
mv /var/lib/mysql/* /tmp/mysql/
innobackupex --copy-back /data/backups/new_backup <--(PATH OF BACKUP WHERE IS STORED)
chown -R mysql: /var/lib/mysql
service mysql start

Getting the shell script:
wget launchpadlibrarian.net

Running:
sh tuning-primer.sh

Here are simple steps to convert a rpm package to deb package and install.

sudo apt-get install alien

wget tinyurl.com

sudo alien ibus-typing-booster-1.2.3-4.el7.noarch.rpm

sudo dpkg -i ibus-typing-booster_1.2.3-5_all.deb

Upgrade from 14.04 to 15.04 is a 2 step journey.

sudo nano /etc/update-manager/release-upgrades
change the value to normal

And then use this command twice!
sudo do-release-upgrade

You can check your ubuntu version:

lsb_release -a
Description: Ubuntu 15.04

Here is how to install Libre office on centOS

64 bit
wget download.documentfoundation.org

32 bit
wget download.documentfoundation.org

tar xvf LibreOffice_4.4.4_Linux_x86_rpm.tar.gz

rpm -Uvh LibreOffice_4.4.4.3_Linux_x86_rpm/RPMS/*.rpm

Here is how you can open and copy files from an iso image.

mkdir /mnt/iso
mount -t iso9660 -o loop /root/Downloads/ubuntu-15.04-desktop-i386.iso /mnt/iso/

ls /mnt/iso/