runtime.exec

I need to execute a command from a program. The command line is ok, I tried it in the terminal, but it doesn't work in the program. I add a copy from my code: File dir = new File("videos"); String[] children = dir.list(); if (children == null) { // Either dir does not exist or is not a directory System.out.print("No existe el directorio\n"); } else { for (int i=0; i<children.length; i++) { // Get filename of file or directory String filename = children[i]; //Recojo el momento exacto System.out.print("\n" +filename); Process p = Runtime.getRuntime().exec("exiftool -a -u -g1 -j videos/"+filename

I've created a standalone java application in which I'm trying to change the directory using the "cd" command in Ubuntu 10.04 terminal. I've used the following code. String[] command = new String[]{"cd",path}; Process child = Runtime.getRuntime().exec(command, null); But the above code gives the following error Exception in thread "main" java.io.IOException: Cannot run program "cd": java.io.IOException: error=2, No such file or directory Can anyone please tell me how to implement it? Joachim Sauer There is no executable called cd , because it can't be implemented in a separate process. The

I am working on a simple java program. It simply compiles and executes another java program. I am using Runtime.exec() function to compile and run. There is no problem with compilation. but when it runs, if the second program needs an input to read from keyboard, I can't give it from the master process. I used getOutputStream() function. but it couldn't help. I will provide my code. public class sam { public static void main(String[] args) throws Exception { try { Process p = Runtime.getRuntime().exec("javac sam2.java"); Process p2 = Runtime.getRuntime().exec("java sam2"); BufferedReader in =

On my system I can't run a simple Java application that start a process. I don't know how to solve. Could you give me some hints how to solve? The program is: [root@newton sisma-acquirer]# cat prova.java import java.io.IOException; public class prova { public static void main(String[] args) throws IOException { Runtime.getRuntime().exec("ls"); } } The result is: [root@newton sisma-acquirer]# javac prova.java && java -cp . prova Exception in thread "main" java.io.IOException: Cannot run program "ls": java.io.IOException: error=12, Cannot allocate memory at java.lang.ProcessBuilder.start

Hello i have some question about java. here is my code: public static void main(String[] args) throws Exception { Process pr = Runtime.getRuntime().exec("java -version"); BufferedReader in = new BufferedReader(new InputStreamReader(pr.getInputStream())); String line; while ((line = in.readLine()) != null) { System.out.println(line); } pr.waitFor(); System.out.println("ok!"); in.close(); System.exit(0); } in that code i'am trying to get a java version command execute is ok, but i can't read the output it just return null. Why? adatapost Use getErrorStream() . BufferedReader in = new

I am trying to get the OutputStream of the Process initiated by exec() to the console. How can this be done? Here is some incomplete code: import java.io.BufferedReader; import java.io.File; import java.io.IOException; import java.io.OutputStream; import java.io.PrintStream; import java.io.Reader; public class RuntimeTests { public static void main(String[] args) { File path = new File("C:\\Dir\\Dir2"); String command = "cmd /c dir"; Reader rdr = null; PrintStream prtStrm = System.out; try { Runtime terminal = Runtime.getRuntime(); OutputStream rtm = terminal.exec(command, null, path)