stdout

I saw this demo once that printed out a paragraph of text (like you'd get when typing some-command --help ), and it then jumped back up to a couple keywords in the text and changed the text color, after it was already printed out in the terminal . That seems crazy to me. How did they do that? Starting to think about it, I guess stdout and stdin are technically an "IO stream", so maybe that's a persistent variable that keeps track of the position of a cursor? I remember doing something like that when building a language parser. The goal would be this: say you type the following into the console

I'm trying to write a Delphi console application that creates a TStream for its standard input, and another TStream for its standard output. (It will be launched by a host app with its input and output redirected to pipes, and will be passing binary data to/from that host app, so TStream will be much better-suited to the task than ReadLn/WriteLn.) How do I go about opening a TStream on standard input or standard output? Allen Bauer Off the top of my head: InputStream := THandleStream.Create(GetStdHandle(STD_INPUT_HANDLE)); OutputStream := THandleStream.Create(GetStdHandle(STD_OUTPUT_HANDLE));

I am trying to send commands to an open cmd.exe process using StandardInput.WriteLine(str) , however none of the commands seem to be sent. First I open a process, with a global variable p ( Process p ). p = new Process() { StartInfo = { CreateNoWindow = true, UseShellExecute = false, RedirectStandardError = true, RedirectStandardInput = true, RedirectStandardOutput = true, FileName = @"cmd.exe", Arguments = "/C" //blank arguments } }; p.Start(); p.WaitForExit(); After, I try to send a command using a simple method, that logs the result in a text box. private void runcmd(string command) { p

I have read this question: Java Programming: call an exe from Java and passing parameters And this answer is good enough https://stackoverflow.com/a/5604756/2674303 But I additionally want to pass parameters to stdin of external process and read from stdout of this process. How can I do this? My efforts : main method: public class ProcessBuilderTest { public static void main(String[] args) throws IOException, InterruptedException { ProcessBuilder pb = new ProcessBuilder("C:\\Program Files\\Java\\jdk1.8.0_111\\bin\\java", "-cp", //class path key "C:\\Users\\redwhite\\IdeaProjects\\HelloMyWorld\

I've been fighting with Tkinter for a while now and have exhausted most the resources I have for referencing this. I've found a couple similar topics here but none quite bring me to where I need to be. I've got a long running python script and I was hoping to build a gui to interact with it some. I'm currently trying to pipe the data from the CLI back into the GUI but can't seem to get any of the data and the GUI locks when the subprocess is called. I'm pretty new with python and on stack overflow, so I apologize if I have missed something stupid or not asked the question in the right way.

My Node & Python backend is running just fine, but I now encountered an issue where if a JSON I'm sending from Python back no Node is too long, it gets split into two and my JSON.parse at the Node side fails. How should I fix this? For example, the first batch clips at ... [1137.6962355826706, -100.78015825640887], [773.3834338399517, -198 and the second one has the remaining few entries .201506231888], [-87276.575065248, -60597.8827676457], [793.1850250453127, -192.1674702207991], [1139.4465453979683, -100.56741252031816], [780.498416769341, -196.04064849430705]]} Do I have to create some