Python

Running as a daemon under systemd - http://devopspy.com/linux/python-script-linux-systemd-service/
http://www.makeuseof.com/tag/5-websites-learn-python-programming/
http://stackoverflow.com/questions/4696413/ftp-retrbinary-help-python
http://www.java2s.com/Tutorial/Python/0420__Network/FTPDownloadExample.htm
https://pythonspot.com/ftp-client-in-python/ This looks good for downloading multiple files.
Python download by ftp
Python ftp with timestamp
Coursera - Getting started with Python
Coursera - Python Data Structures
Python reading from standard in
Python writing to a file
Python connecting to mysql database
Installing Python on Windows