Twitter email fetcher

Hello, I need a script which will fetch all the data for particular Twitter searches to a notepad file or something of that sort continuously. Such as a search for "[login to view URL]", it will be cool if the script can only save the emails but that's not really a big issue if it can't. I shall also be able to run how often the script will run, such as every few minutes for certain queries, every few hours for other queries, I reckon this can be done via a cronjob or something similar. Another thing to note is that script shouldn't get banned by Twitter, I suppose using an API or something like that could help here. I own a VPS so I am able to run the script on my server if the script is written to work on a Linux environment. I will need to see a demo to make sure it's working. Please place your bids.