Zenity | full featured library to display dialogs

I'm trying to exchange a string between a Python file and a Shell script. Here is how I'm doing it:

I wanted to make a zenity list that takes the fields for one column from one list and the fields for the other column from another list

I'm using zenity --password to get input from the user. I've tried var=${zenity --password};, zenity var=--password, and var=zenity --password, but none of them work. For the last two, I got an error code. For the second attempt, I got the error code: You must specify a dialog type. See 'zenity --help' for details. For the last one, I got error code: -bash: --password: command not found. I'm not that familiar with bash, and I only know basic commands. I'm using Zenity (sudo apt-get install zenity). If someone knows how to fix this, please help.

so im trying to do a delete function inside zenity . I managed to let the user input his desired path and then i want to display all the files that are present inside it . I found out how to do it and i know it work but no with zenity . The next window (file selection) is not poping up and my program get back to the menu. thanks here is my code.Thanks u for your help and time!

I have heard its a conventional practice to store program dependent files in /usr/share/application-folder in linux. So I'm trying to do it in my c program in a function called load_interface_files() for example. I am not sure if this is a good practice or not, I've heard about creating configuration files for this kind of issues.

Anyways, here's the the code I wrote to make a directory in /usr/share.

I'm writing a Zenity-based status monitor for GNU dd(1) in Python. Due to the constraints of the system I'm targeting, the wrapper must run on Python 2, and cannot pull in external libraries.

Among the requirements are for Zenity's "Cancel" button to terminate dd if it's not yet finished.

I must do the following without delay (i.e. triggered/driven/immediately); if multiple of the below conditions are met/triggered simultaneously, they are to be executed in the listed order:

• when Zenity exits, terminate dd
• when dd writes to its stderr, munge+forward that data to Zenity's stdin
• when dd exits, if its return code was not 0, terminate Zenity

However, the epoll object seems to only be triggering on dd's output; it never triggers on Zenity exiting, despite my registering EPOLLHUP on Zenity's stdin.

How should/can this be done? I understand that epoll is the only primitive that can be used to correctly trigger on dd's output (via EPOLLIN); I also understand that it is an unweildy primitive which may be unsuitable for triggering on Zenity's exiting. (If required, I can implement more logic into this file; doing so is infinitely preferable to pulling in any 3rd-party library, however small or "common". I reiterate that I understand that epoll is unwieldy to work with and may require a large amount of glue-logic.)

Alternatively: if epoll is not the correct primitive for monitoring a subprocess for its exit, then what is the correct way to monitor a subprocess for exit while monitoring a subprocess for output in a Python 2 compatible way?

(I do not inherently need multithreaded capabilities; to take all actions sequentially would be fully in-spec; though, if multithreaded programming would be absolutely necessary in this case in order to avoid a busy-loop, then so be it.)

Below is my full code so far.

I'm writing a game that uses python and webkit, and a webpage is the front-end/GUI. The PC is connected to an Arduino that controls a coin hopper and other i/o. When the Arduino sends 'coinin' over serial, I capture this in a serial-watching thread, then run some javascript on the webpage to 'add' a coin to the game.

For simplicity in troubleshooting, I set up an example that runs a test thread instead of reading serial, but the problem is the same. The thread tries to add a coin every second by running 'addcoin()' on the webpage. If you uncomment the run_javascript() line, the program core dumps.

I came up with a keyboard hack workaround. The test thread, instead of trying to run_javascript() directly, does an os.system call to xdotool to type the letters 'conn' to the program window. That window has a key-event listener, and when it gets the letters 'conn' in keybuffer[], it then runs the desired run_javascript() call to the webpage. If you copy the two files to a folder, and run the python program, you'll see the coin text count up every second (Hit BackSpace to end the program). If you try to run the javascript from the thread instead, you'll see the program core dump.

The question is, is there a better way to do this, without having to use the keyboard hack to run the javascript? Although the hack gets around the problem, it introduces a weakness in the game. You can cheat a coin in by typing 'conn' on the keyboard. I'd like to find some other way to trigger the event, without having to use the keyboard event.

Sample webpage index.htm

I've made a small function that I'm using when testing a script.

However I'm not sure it displays all characters, like spaces, quote, and stuff like that.

This is the function:

I'm performing an rsync process to copy files from an SD card and I want to show the progress per file in Zenity during the rsync process per file. I tried Zenity and rsync which seemed perfect for me. It should send the current file and % copied to Zenity, but I cannot get it to, output is not realtime and does not move the progress bar. And I could not figure out why its not working.

What I'm trying to do at the least is send the percentage of the file copy into Zenity to drive the progress bar. But this needs to be a number without the trailing % to drive the progress bar.

This does not output anything, but if I remove the sed and Zenity steps then I get: 0%, 1%, 2% etc. But Zenity requires non percentage values.