title: How to append a whole dataframe to a CSV in R
body: <p>I can already append a row to a CSV using <strong>cat</strong> which makes that very easy:</p>
  
  <pre><code>  cat("my row, 1, 2, 3, 4", "mydf.csv",sep="\n", append=TRUE)
  </code></pre>
  
  <p>However as far as I know you cannot use cat with a whole dataframe (multiple columns and rows). </p>
  
  <p>I am doing this because I am writing many DFs to a CSV and I want to append the multiple CSVs using <strong>write.table</strong>. The dataframes all have the same number of columns.</p>
  
  <p>I thought about doing a loop over rows to write with cat but that doesn't sound like the best way - any one have good way of doing this in R?</p>