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    <p>Esse "erro final" não ajuda muito. Coloque os erros anteriores,
      especificamente o do xml2, que foi o erro inicial. Entretanto,
      acredito que deva ter de instalar algum pacote de desenvolvimento
      (headers) do xml para que a instalação funcione corretamente. É
      suposição...</p>
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    <p>Atenciosamente<br>
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    <div class="moz-cite-prefix">On 13/05/2020 08:25, Marco Tadeu
      Gonçalves por (R-br) wrote:<br>
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    <blockquote type="cite"
cite="mid:CAGB2GpuFX_9t79T3X3BgLg9aJtjpYUPufRVQFHckgv6YM1F19Q@mail.gmail.com">
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        <div class="gmail_default"
          style="font-family:verdana,sans-serif">Bom dia, </div>
        <div class="gmail_default"
          style="font-family:verdana,sans-serif">Sou novo no R e   estou
          com dificuldade na instalação de um pacote.</div>
        <div class="gmail_default"
          style="font-family:verdana,sans-serif">Uso o Ubuntu 18.04 e
          também utilizo o Rstudio. </div>
        <div class="gmail_default"
          style="font-family:verdana,sans-serif">O pacote que não
          consigo instalar é o devtools. Já tentei no script do Rstudio
          e também pelo terminal o comando install.packages, mas não
          funcionou, aparecendo a seguinte mensagem:</div>
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          style="font-family:verdana,sans-serif"><br>
        </div>
        <div class="gmail_default"
          style="font-family:verdana,sans-serif">1: In
          install.packages("devtools") :<br>
            installation of package ‘xml2’ had non-zero exit status<br>
          2: In install.packages("devtools") :<br>
            installation of package ‘roxygen2’ had non-zero exit status<br>
          3: In install.packages("devtools") :<br>
            installation of package ‘rversions’ had non-zero exit status<br>
          4: In install.packages("devtools") :<br>
            installation of package ‘devtools’ had non-zero exit status<br>
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        <div class="gmail_default"
          style="font-family:verdana,sans-serif"><br>
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        <div class="gmail_default"
          style="font-family:verdana,sans-serif">Desde já agradeço.</div>
        <div><br>
        </div>
        -- <br>
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src="https://docs.google.com/uc?export=download&id=19OXsJLPc6IVfUNXqaPy9ihhFHM2H6KVv&revid=0B2XqFzye78avdGJ2dVAzQjdwdFM3S0h1aElmRVdoWmNGUktrPQ"
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                                                        <div><font
                                                          face="arial"
                                                          color="#666666"><b>Marco
                                                          Tadeu
                                                          Gonçalves -
                                                          Professor EBTT</b></font></div>
                                                        <div><font
                                                          face="arial"
                                                          color="#666666"><b>Área
                                                          de atuação:
                                                          Matemática</b></font></div>
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                                <div style="color:rgb(34,34,34)"><font
                                    color="#666666">Instituto Federal do
                                    Paraná</font></div>
                                <div style="color:rgb(34,34,34)"><font
                                    color="#666666">Campus Avançado de
                                    Goioerê<br>
                                  </font>Rodovia BR 180 - Trevo da UEM
                                  s/n CEP: 87360-000<br>
                                  <font color="#666666">(44) 3522 - 5432</font></div>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
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