runtime.exec

I am getting an exception like java.io.IOException: Cannot run program cat /home/talha/* | grep -c TEXT_TO_SEARCH": error=2, No such file or directory while executing the command below despite that there are no issues when I execute the same command through the terminal. I need to execute and return the output of the command below: cat /home/talha/* | grep -c TEXT_TO_SEARCH Here is the method used to execute commands using Runtime class: public static String executeCommand(String command) { StringBuffer output = new StringBuffer(); Process p; try { p = Runtime.getRuntime().exec(command); p

I run code on linux ubuntu 17.10 public class TestExec { public static void main(String[] args) { try { Process p = Runtime.getRuntime().exec(new String[]{"/bin/sh", "-c", "ulimit", "-n"}); BufferedReader in = new BufferedReader( new InputStreamReader(p.getInputStream())); String line = null; while ((line = in.readLine()) != null) { System.out.println(line); } } catch (IOException e) { e.printStackTrace(); } } } this code returns "unlimited" but whenever I run command from terminal I get 1024. Why those numbers are different? You get the same result if you run the same command from the command

I am trying to run a jar file through jsp. I use the command Runtime.getRuntime().exec("java -jar file.jar"); I get the error Unable to access jarfile file.jar when I print the error stream. I tried running with the classpath set to the current directory as Runtime.getRuntime().exec("java -cp . -jar file.jar"); but still get the same error. I also tried giving the entire path to the jar file. When I do this, the jsp file hangs after execuing the exec statement. This is the line I use in windows: process = Runtime.getRuntime().exec("java -jar C:\\Users\\Jeff\\Documents\\NetBeansProjects\

This code will execute an external exe application. private void clientDataActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: try { Runtime.getRuntime().exec("C:\\Program Files (x86)\\VideoLAN\\VLC\\vlc.exe"); } catch(Exception e) { System.out.println(e.getMessage()); } } What if I want to execute external java file? Is it possible? For example like this command: Runtime.getRuntime().exec("cmd.exe /C start cd \"C:\Users\sg552\Desktop\ java testfile"); The code does not work from java and cmd prompt. How to solve this? First, you command line looks wrong. A

I am working on a Java Project for my own learning, what i have made is a class which can both read and write to external process using Runtime.getRuntime().exec(cmd); Now i was wondering is there any special way of checking if a particular software/tool is installed on the system. Like i use sshpass utility to remotely login to other machines, and if it is not there already i would like to install it using my program. But for this how should i go about checking if it exists there or not? The idea i have in my mind is to run the command and see the response, if the returned string matches

Possible Duplicate: Execute another jar in a java program I try to run a jar file of with a java application from within another java application, but I cannot get it to work. My code is below // run Jar in other java application Runtime run=Runtime.getRuntime(); run.exec("java -jar ManichemManagerRotas BatchProcess 8 2012"); I try to run manichemmanagerrotas.jar with three arguments. all method i can do it but it cannot work still problem is cannot run jar file's main method class if you have any idea of this problem,plz give me replay me it's important task for me i try to run jar file then

I have run into an issue where , when using Java Runtime to run another java program, the program freezes because the other program requires stdin . There is a problem with handling the stdin after executing another java program with Runtime exec() . Here is sample code that I can't get to work. Is this even possible? import java.util.*; import java.io.*; public class ExecNoGobble { public static void main(String args[]) { if (args.length < 1) { System.out.println("USAGE: java ExecNoGobble <cmd>"); System.exit(1); } try { String[] cmd = new String[3]; cmd[0] = "cmd.exe" ; cmd[1] = "/C" ; cmd[2

i am working on a java based tool, which should search for PDF files on selected directories and which should search for special words/sentences in this PDF files. After that a JList shows the files which fits and with a double-click on one of these entries the PDF Reader (Adobe Reader) should open this file directly on the page where the word/sentence appeares. I tried two different things. Runtime.exec: try{ Runtime.getRuntime().exec("rundll32" + " " + "url.dll,FileProtocolHandler /A page=4" + " " + o.toString()); }catch(IOException ex) { ex.printStackTrace(); } Desktop open: if(Desktop