similar to: Using IO.popen to capture stderr?

Howdy. I am trying to launch an external shell process from my Rails app using IO.popen. The process runs just fine when I am logged in as the user from the shell but when I run it from Rails, the task doesn''t run properly and the output is too truncated to see any errors. Anything special I need to worry about when running shell tasks this way? I have code like the following:

i?m fairly new to ruby... any suggestions getting the below to work... i?d like to use myfile_field.read within encodeVideo and then self.data = Student_Interviews.flv class Myfile < ActiveRecord::Base . . . def encodeVideo opts #, stream IO.popen(?ffmpeg #{opts}?, ?w?)#{ |io| io.puts stream} end def myfile=(myfile_field) if myfile_field and myfile_field.length > 0 encodeVideo ?-i

Hi I''m using princexml pdf generation in one of our apps and bump into this very weird problem. On our ubuntu box and local machines (MacBook Pro) pdfs are generated flawlessly. On the production xserve (running the rails app in production mode on a mongrel cluster), a 2.8 GHz Quad-Core Intel Xeon, strange things start happening. The following sections give back nil values in

I''ve got a client who''s recently been moved onto a CentOS4 machine from a 3.x and is writing: "It looks like there''s one remaining problem now; at several points in the PHP part of the dating software, C- binaries are called using popen(). The binaries work correct (tested at the command line with the proper arguments) The popen() retrieves the correct command

I''m running Apache2 on windows and I have a controller that issues a popen. class FileController < ApplicationController def index f = IO.popen("dir") @files = f.readlines end end This works using webbrick but on Apache produces... ---------- Errno::ENOENT in File#index No such file or directory - dir RAILS_ROOT: C:/www/teensymud/public/../config/..

Hi, My application uses popen to execute UNIX commands. After I replace rsh with ssh, it stopped working. I have made a test C code to reproduce the problem as attached in this email. In the test program, I called popen for ssh command and then pclose right away. I got the following error: kirk 588$ a.out Write failed flushing stdout buffer. write stdout: Broken pipe Any idea what is

From: "Michael S. Fischer" <michael at dynamine.net> > > I wanted my worker program (which uses EM) to pass the user''s password > to the Expect script via standard input in order to avoid some > security hazards associated with alternatives such as storing it in a > file or in the environment, either of which may be observed by others > logged into the

As described on wkhtmltopdf Google group (http://code.google.com/p/wkhtmltopdf/issues/detail?id=162), I have a problem generating a PDF while using popen and wkhtmltopdf. wkhtmltopdf takes HTML code as input and ouputs a PDF file. Here is what I''m doing: command = ''"C:\Program Files\wkhtmltopdf\wkhtmltopdf.exe" - - -q'' IO.popen(command,

I''m looking to write a javascript heavy clientside program with a something serverside backend that connects to the free maxima math program. I have extensive knowledge of ruby on rails, so I would prefer to call Maxima with ruby, but I don''t know if this is even possible. Its fairly easy to call Maxima (with a lisp implementation) using ANSI C, it is a little less easy to

Let''s try that again, without Hotmail''s crappy formatting. Dan, I am one of the developer of the FreeRIDE project (the Ruby IDE) and I''m in charge of the FreeRIDE debugger with which we have had a number of problems on Windows now mostly due to the clunky implementation of IO/Process/Signal stuff on Win32. I recently came across your Win32 utils package and

Dear all, When I compared the performance of some application on both a Xen domU and a standard linux machine (where domU runs on a similar physical mahine), I notice the application runs faster on the domU than on the physical machine. Instrumenting the application code shows the application spends more time on popen() calls on domU than on the physical machine. I wonder if xenlinux does some

On 29.8.2019 12.18, R.N.S. via dovecot wrote: > >> Am 28.08.2019 um 20:02 schrieb Aki Tuomi via dovecot <dovecot at dovecot.org>: >> >> >>> On 28/08/2019 21:01 R.N.S. via dovecot <dovecot at dovecot.org> wrote: >>> >>> >>>> Am 28.08.2019 um 19:46 schrieb Jakobus Sch?rz via dovecot <dovecot at dovecot.org>:

In my app i upload a file, convert it with ffmpeg, delete the original and make a small thumbnail out of the big thumbnail ffmpeg makes. At the moment it seems like these actions are tripping over each other - how can i make the app wait until ffmpeg has completed it''s output before doing the next thing? -- Posted via http://www.ruby-forum.com/.

ROR newbie here... I''m trying to build a form to upload a CSV file, then parse and store the data. I have debugged this code up this point, but now when I browse to my csv file, and click Upload, I get this error: "Missing template uploads/process_file.html.erb in view path..." Here is my view (in /uploads/new.html.erb) <% form_tag ({:action =>

> On 28/08/2019 21:01 R.N.S. via dovecot <dovecot at dovecot.org> wrote: > > > > Am 28.08.2019 um 19:46 schrieb Jakobus Sch?rz via dovecot <dovecot at dovecot.org>: > > > > I think, i had the same problem as you. > > > > When dovecot runs lmtp, no user is logged in, so there is no user from > > which you can get groups. So i think, my

On 29.8.2019 12.30, R.N.S. via dovecot wrote: > >> Am 29.08.2019 um 11:23 schrieb Aki Tuomi via dovecot <dovecot at dovecot.org>: >> >> >> On 29.8.2019 12.18, R.N.S. via dovecot wrote: >>>> Am 28.08.2019 um 20:02 schrieb Aki Tuomi via dovecot <dovecot at dovecot.org>: >>>> >>>> >>>>> On 28/08/2019 21:01

> Am 29.08.2019 um 11:30 schrieb R.N.S. via dovecot <dovecot at dovecot.org>: > > > >> Am 29.08.2019 um 11:23 schrieb Aki Tuomi via dovecot <dovecot at dovecot.org>: >> >> >> On 29.8.2019 12.18, R.N.S. via dovecot wrote: >>> >>>> Am 28.08.2019 um 20:02 schrieb Aki Tuomi via dovecot <dovecot at dovecot.org>:

gen_initramfs_list.sh failed to generate a dependency list when it was supplied the -d option. Restructured gen_initramfs_list.sh to support dependency info with -d. This also fixes a bug where we did not properly process when more than one dir was specified. Finally update dependency info for the -d case (list_default_initramfs) In usr/Kbuild remove "" around CONFIG_RAMFS_SOURCE so the

I use ControlMaster auto (along with ControlPath) in my ssh config and find it very handy. I have noticed an annoying behavior, though: it seems that if there is no existing master connection and ssh creates a new one, the master connection process that is started has its stderr left open. This has manifested itself in two ways so far: (1) When using ssh day-to-day, I may be doing some work and

I am having problem making ggplot2, tikzDevice, and knitr working together. I used a very simple example: ---------------------------example.Rnw----------------------------- \documentclass[preview]{standalone} \begin{document} \begin{figure} <<fig1,eval=TRUE,echo=FALSE,dev='tikz'>>= library(ggplot2) qplot(displ, hwy, data = mpg, colour = factor(cyl)) @ \end{figure}