[R] tail a file in R

Greetings, not sure tail in R can tail a file as documented here http://rss.acs.unt.edu/Rdoc/library/R.basic/html/tail.html but when I tried my R version 2.14.2 it doesn't work. I need to tail many files to see if appending operations need to be performed on them.. Thanks! Jim. __

[R] moving averages on specific interval and merge

Greetings! I am using quantstrat and xts to do some intraday work and come up with this problem. the xts object temp in the following example is attached as and rda file. > head(temp) A.Open A.High A.Low A.Close A.Volume 2012-02-01 08:29:00 42.47 43.76 41.410 43.76 207