Hi Huagen, 1. The ExecuteStreamCommand uses a ProcessBuilder under the covers. If you want wildcard expansion, you should avoid quoting the arg to be expanded. Alternatively, you could run bash as your command with -c as the first argument and then the original command as a single argument to bash. ( http://stackoverflow.com/questions/16403539/cant-run-program-with-processbuilder-runs-fine-from-command-line#answer-16403599 ).
That being said, it might be better to use NiFi's GetFiles functionality to get the contents of each file in a given directory as a FlowFile. 2. If you need to ender a newline into a text field, I believe you can do so with Shift+Enter (see https://pierrevillard.com/2016/04/04/analyze-flickr-account-using-apache/ and search for carriage return) Thanks, Bryan On Tue, Jun 21, 2016 at 9:12 AM, Huagen peng <huagen.p...@gmail.com> wrote: > Hi, > > I need help on escaping characters in a couple of situations: > > 1. I use the ExecuteStreamCommand to output the content of all the *.txt > files in a directory. I would like to use the cat command and I found > myself not able to escape the *.txt in the argument. For now I end up > calling a shell script with basically ‘cat *.txt’ in the script. Is there > a simpler way to do this? > > 2. Before I send email using PutEmail, I have an UpdateAttribute processor > to compose the email message. How do I escape the new line character in > the attribute so that I can have a multiline email message? > > Thanks, > > Huagen
