I guess the issue is that you are only reading InputStream and not reading ErrorStream. You also have to take care that both the streams are read in parallel. It may so happen that currently the data piped from the output stream fills up the OS buffer, your exec command will be automatically be suspended … Read more
Each argument you pass to the command should be a separate String element. So you command array should look more like… String[] a = new String[] { “C:\path\that has\spaces\plink”, “-arg1”, “foo”, “-arg2”, “bar”, “path/on/remote/machine/iperf -arg3 hello -arg4 world”}; Each element will now appear as a individual element in the programs args variable I would also, … Read more
Use this: Runtime.getRuntime().exec(new String[] {“sh”, “-l”, “-c”, “./foo”}); Main point: don’t put the double quotes in. That’s only used when writing a command-line in the shell! e.g., echo “Hello, world!” (as typed in the shell) gets translated to: Runtime.getRuntime().exec(new String[] {“echo”, “Hello, world!”}); (Just forget for the moment that the shell normally has a builtin … Read more
If I’m not mistaken, the “ffmpeg-wrapper” project you linked to is out of date and not maintained. FFmpeg is a very active project, lot’s of changes and releases all the time. You should look at the Xuggler project, this provides a Java API for what you want to do, and they have tight integration with … Read more
Are you familiar with the exec double-quotes bug? (for Runtime.exec or ProcessBuilder) You can try: Runtime.getRuntime().exec(new String[] { “\”C:/Program Files/MySQL/MySQL Server 5.0/bin/mysqldump\””, “-h”, hostName+user+databaseName}); Just make sure none of your parameters you will have to pass contains double quotes (while not beginning with double quotes) (see bug 6511002) Any parameter like: mykey=”my value with space” … Read more
After a lot of searching I found this: http://www.coderanch.com/t/423573/java/java/Passing-wilcard-Runtime-exec-command Runtime.exec(new String[] { “sh”, “-c”, “rm /tmp/ABC*” });
I found a workaround in this article, basically the idea is that you create a process early on in the startup of your application that you communicate with (via input streams) and then that subprocess executes your commands for you. //you would probably want to make this a singleton public class ProcessHelper { private OutputStreamWriter … Read more
To use it with ProcessBuilder you must separate the commands like this: final List<String> commands = new ArrayList<String>(); commands.add(“cmd.exe”); commands.add(“/C”); commands.add(“start”); ProcessBuilder pb = new ProcessBuilder(commands); pb.start();
You start a new process with Runtime.exec(command). Each process has a working directory. This is normally the directory in which the parent process was started, but you can change the directory in which your process is started. I would recommend to use ProcessBuilder ProcessBuilder pb = new ProcessBuilder(“ls”); pb.inheritIO(); pb.directory(new File(“bin”)); pb.start(); If you want … Read more
I’ve struggled with the same kind of issues. I can’t remember what exactly was wrong (maybe I forgot to flush / close the streams correctly or something …). Anyway, here is what I came up with. /** * Handle communication with a process, reading its output/error and feeding its input * @param process The process … Read more