Copy files between machines:
>>pscp localfile user@host:path
Get twitter keys
Go to https://apps.twitter.com/
Install MySQLdb
>>conda install mysql-python
User
check user detail
>>sudo cat /etc/passwd
delete user home directory
>>sudo userdel -r [username]
ec2 passwd enabled-- http://www.cyberciti.biz/faq/howto-linux-add-user-to-group/
Storage usage
>>sudo du -sh /home/
or
>>sudo df -h
Screen sharing
>>screen -S sessionName
>>screen -x
Starcluster
Error: Too many open files (sinaler.cpp:300)-- https://flenniken.net/blog/65/
