[R] Apply rmarkdown::render() outside the RStudio don't find pandoc

[walmes .]

Hello,

I want to render a Rmd file using rmarkdown::render() function but I'm used
to edit files with Emacs and I open a linux terminal session to compile
this file with knitr::knit2html()

## On the linux terminal.
$ echo "require(knitr); knit2html('teste01.Rmd')" | R --vanilla

I want to use rmarkdown::render instead. When I tried this, with a R
session open in the linux terminal, I get the message

## In a R session inside the linux terminal
> rmarkdown::render("teste01.Rmd")
Error: pandoc version 1.12.3 or higher is required and was not found.

So I open the the teste01.Rmd file in RStudio and clicked on the "knit
HTML" button and it works. The output is bellow.

## Output in the RStudio after clicking on the "Knit HTML" button.

processing file: teste01.Rmd
  |.............                                                    |  20%
  ordinary text without R code

  |..........................                                       |  40%
label: unnamed-chunk-1
  |.......................................                          |  60%
  ordinary text without R code

  |....................................................             |  80%
label: unnamed-chunk-2 (with options)
List of 1
 $ echo: logi FALSE

  |.................................................................| 100%
  ordinary text without R code


output file: teste01.knit.md

*/usr/lib/rstudio/bin/pandoc/pandoc* teste01.utf8.md --to html --from
markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash-implicit_figures
--output teste01.html --smart --email-obfuscation none --standalone
--section-divs --table-of-contents --toc-depth 3 --template
/home/walmes/R/x86_64-pc-linux-gnu-library/3.1/rmarkdown/rmd/h/default.html
--css /home/walmes/Dropbox/ridiculas/markdown/ridiculas.css --variable
theme:cerulean --include-in-header
/tmp/RtmpkgSjDp/rmarkdown-str4aee5c225085.html --mathjax --variable
mathjax-url:
https://c328740.ssl.cf1.rackcdn.com/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML
--no-highlight --variable highlightjs=teste01_files/highlight --variable
highlightjs-theme=textmate

Output created: teste01.html

Its possible to see that RStudio call the pandoc that is at
*/usr/lib/rstudio/bin/pandoc/* and not the old version of pandoc in my
system.

I try overcome this by creating an alias
*pandoc='/usr/lib/rstudio/bin/pandoc/pandoc'*, bus this doesn't work.
Someone has any idea to solve this? I want to use rmarkdown::render()
outside the RStudio.

Thanks.
Walmes.

==========================================================================
Walmes Marques Zeviani
LEG (Laboratório de Estatística e Geoinformação, 25.450418 S, 49.231759 W)
Departamento de Estatística - Universidade Federal do Paraná
fone: (+55) 41 3361 3573
skype: walmeszeviani
homepage: http://www.leg.ufpr.br/~walmes
linux user number: 531218
==========================================================================

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