search for: automacticly

...2000 12333 etc. How is this possible? Also an extra question. My filename is called something like (a new file every day) BidAskCurves_DE-AU_20130425_20130424130349.xml The first part after the "AU" is the current date, this I can generate automacticly but I can't generate the last since its the date, time, minute and second of the time the data was uploaded from another party to their ftp - where I'm getting the data. Is there anyway to get R to find the right file, when I can only generate part of the file?