title: Open txt from a list with the vectors of the locations
body: <p>I have a list with 4 vectors, and in each one there are the locations of different txt files. Like this</p>
  <pre><code>ubi &lt;- list(a = c(&quot;base1_a1.txt&quot;, &quot;base2_a1.txt&quot;, ...),
              b = c(&quot;base1_a2.txt&quot;, &quot;base2_a2.txt&quot;, ..., ...)
  </code></pre>
  <p>I need to create a list with the dataframes of the open txt and that contains 4 lists and in each list the dataframes of the previous locations.</p>
  <p>I tried this, but didn't work</p>
  <pre><code>dfs_months &lt;- lapply(lapply(ubi, function(ubi) {ubi[[seq_along(ubi)]]}), function(x) {read.table(x, header = T, sep=&quot;;&quot;, dec = &quot;.&quot;)})
  </code></pre>