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    Hi Rick,<br>
    <br>
    This is very interesting. I did not know either that there is a dash
    shell in ubuntu?! <br>
    But you figured it out. And now the script works. Great! <br>
    <br>
    I'll contact the author of the packages, perhaps he can add this
    behaviour to the "known issues".<br>
    <br>
    Thanks a lot!<br>
    Matthias<br>
    <br>
    <div class="moz-cite-prefix">On 10/02/17 22:05, Rick Brownrigg
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAGKRhbHb2O-KV_=mFL+Jhs7GZovnRHtaQKJLx6qd_sTaETJEqw@mail.gmail.com"
      type="cite">
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                  <div>Hi Matthias,<br>
                    <br>
                  </div>
                  I think maybe we have explaination.  The so-called
                  "brace-expansion" appears to be a bash thing. I
                  speculate your shell in your terminal window is indeed
                  bash.  However, by default, NCL under the covers
                  invokes "/bin/sh" during the systemfunc() call. On
                  many Linux systems, /bin/sh is simply a symlink to
                  bash (that's the case on my system and why things work
                  for me).  However, apparently on Ubuntu systems,
                  /bin/sh is a symlink to a shell called "dash" (I'd
                  never heard of it), and dash is the one that does not
                  understand brace-expansion -- you can try it yourself
                  by invoking "dash" on the command-line and then trying
                  a command that involves brace-expansion.  More on this
                  here:<br>
                  <br>
                      <a moz-do-not-send="true"
href="http://askubuntu.com/questions/87853/what-is-default-shell-for-terminal">http://askubuntu.com/questions/87853/what-is-default-shell-for-terminal</a><br>
                  <br>
                </div>
                So a solution in your case would be something like this:<br>
                <br>
              </div>
                  files = systemfunc("bash -c 'ls
              /DIRECTORY/*{.nc,.hdf,.pdf}'")<br>
              <br>
            </div>
            In particular note the "-c" switch to bash, and that the
            command you want bash to execute is surrounded by
            single-quotes.<br>
            <br>
          </div>
          Hope that helps...<br>
        </div>
        Rick<br>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Fri, Feb 10, 2017 at 12:54 PM,
          Matthias Demuzere <span dir="ltr">&lt;<a
              moz-do-not-send="true"
              href="mailto:Matthias.Demuzere@ugent.be" target="_blank">Matthias.Demuzere@ugent.be</a>&gt;</span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div>
              <div dir="auto">Hi Rick,
                <div dir="auto"><br>
                </div>
                <div dir="auto">Yes... I tested this for a single string
                  without curly brackets (eg. *.nc) and that works fine
                  ...</div>
                <div dir="auto">Does this indicate there is somehow a
                  system dependency, even though the curly brackets do
                  work directly in the terminal? Quite puzzling, no?</div>
                <span class="HOEnZb"><font color="#888888">
                    <div dir="auto"><br>
                    </div>
                    <div dir="auto">Matthias</div>
                  </font></span></div>
              <div>
                <div class="h5">
                  <div class="gmail_extra"><br>
                    <div class="gmail_quote">On 10 Feb 2017 18:30, Rick
                      Brownrigg &lt;<a moz-do-not-send="true"
                        href="mailto:brownrig@ucar.edu" target="_blank">brownrig@ucar.edu</a>&gt;
                      wrote:<br type="attribution">
                      <blockquote class="m_4585874273660185032quote"
                        style="margin:0 0 0 .8ex;border-left:1px #ccc
                        solid;padding-left:1ex">
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                          <div dir="ltr">
                            <div>
                              <div>Hi Matthias,<br>
                                <br>
                              </div>
                              That is very odd -- it works for me, both
                              at bash command line and using
                              systemfunc() from within NCL.  Can you get
                              systemfunc to return files from a
                              directory without using "{}" notation,
                              .i.e, "ls *" for example? Or simply "ls
                              foo" where the file foo is known to exist
                              in the current directory?<br>
                              <br>
                            </div>
                            Rick<br>
                          </div>
                          <div><br>
                            <div
                              class="m_4585874273660185032elided-text">On
                              Fri, Feb 10, 2017 at 10:15 AM, Matthias
                              Demuzere <span dir="ltr">
                                &lt;<a moz-do-not-send="true"
                                  href="mailto:matthias.demuzere@ugent.be"
                                  target="_blank">matthias.demuzere@ugent.be</a>&gt;</span>
                              wrote:<br>
                              <blockquote style="margin:0 0 0
                                0.8ex;border-left:1px #ccc
                                solid;padding-left:1ex">
                                <div>Dear all,<br>
                                  <br>
                                  I am currently testing the CVDP (<a
                                    moz-do-not-send="true"
                                    href="http://www.cesm.ucar.edu/working_groups/CVC/cvdp/"
                                    target="_blank">http://www.cesm.ucar.edu/work<wbr>ing_groups/CVC/cvdp/</a>)
                                  which is written in ncl.<br>
                                  Currently the software does not run
                                  because it can't find the proper
                                  datasets. <br>
                                  <br>
                                  Finding the data is driven by the <b>systemfunc</b>
                                  command using curly brackets (multiple
                                  options).<br>
                                  For example, within ncl, I want to
                                  list all files that have one of the
                                  following extension: .nc, .hdf, .pdf.<br>
                                  <br>
                                  This I do with:<br>
                                  myFiles = systemfunc("ls
                                  /DIRECTORY/*{.nc,.hdf,.pdf}")<br>
                                  <br>
                                  If I fo this in ncl, I get an error:
                                  ls: cannot access
                                  '/DIRECTORY/*{.nc,.hdf,.pdf}': No such
                                  file or directory<br>
                                  <br>
                                  Yet, when pasting ls
                                  /DIRECTORY/*{.nc,.hdf,.pdf} directly
                                  in my system (ubuntu 16.04, 64bit)
                                  terminal, I do get a list of the
                                  finals with this extension. So the
                                  expected result.<br>
                                  <br>
                                  I have tested this in ncl-6.3.0 and
                                  6.2.1, but I have the same problem in
                                  both.<br>
                                  Did anyone else notice this before?
                                  Any idea on how to fix this?<br>
                                  <br>
                                  Thanks!<br>
                                  <br>
                                  Regards,<br>
                                  Matthias<br>
                                  <br>
                                  <br>
                                  <pre>-- 
Post-doctoral Research Fellow
_____________________________

UGent [Home]
Department of Forest and Water Management
Laboratory for Hydrology and Water Management
Coupure links 653, B-9000 Ghent, Belgium
Email: <a moz-do-not-send="true" href="mailto:Matthias.demuzere@UGent.be" target="_blank">Matthias.demuzere@UGent.be</a>
Web: <a moz-do-not-send="true" href="http://www.ugent.be/bw/dfwm/en/research/LHWM/staff/matthias" target="_blank">http://www.ugent.be/bw/dfwm/en<wbr>/research/LHWM/staff/matthias</a>

KU Leuven [Affiliated]
Department of Earth &amp; Environmental Sciences
Division of Geography and Tourism / Regional climate studies
Celestijnenlaan 200E, B-3001 Heverlee (Leuven), Belgium
Email: <a moz-do-not-send="true" href="mailto:matthias.demuzere@kuleuven.be" target="_blank">matthias.demuzere@kuleuven.be</a>
Web: <a moz-do-not-send="true" href="https://ees.kuleuven.be/geography/rcs" target="_blank">https://ees.kuleuven.be/geogra<wbr>phy/rcs</a></pre>
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<pre class="moz-signature" cols="72">-- 
Post-doctoral Research Fellow
_____________________________

UGent [Home]
Department of Forest and Water Management
Laboratory for Hydrology and Water Management
Coupure links 653, B-9000 Ghent, Belgium
Email: <a class="moz-txt-link-abbreviated" href="mailto:Matthias.demuzere@UGent.be">Matthias.demuzere@UGent.be</a>
Web: <a class="moz-txt-link-freetext" href="http://www.ugent.be/bw/dfwm/en/research/LHWM/staff/matthias">http://www.ugent.be/bw/dfwm/en/research/LHWM/staff/matthias</a>

KU Leuven [Affiliated]
Department of Earth &amp; Environmental Sciences
Division of Geography and Tourism / Regional climate studies
Celestijnenlaan 200E, B-3001 Heverlee (Leuven), Belgium
Email: <a class="moz-txt-link-abbreviated" href="mailto:matthias.demuzere@kuleuven.be">matthias.demuzere@kuleuven.be</a>
Web: <a class="moz-txt-link-freetext" href="https://ees.kuleuven.be/geography/rcs">https://ees.kuleuven.be/geography/rcs</a></pre></body></html>