I am trying to run a command which I give my ProcesBuilder as parameter while constructing.
The command is the following:
wmic process where name='OUTLOOK.EXE' get CommandLine
I normally just would run it with a pb.command() but I need to "catch" the output which I already did via a BufferedReader.
So my question is how I can do the Syntax right if I want to do something like:
ProcessBuilder pb = new ProcessBuilder("wmic process where name='OUTLOOK.EXE' get CommandLine");
I know I have to split this up somehow but I can't figure out how.
full method looks like :
public static void sendmail() throws IOException {
ProcessBuilder pb = new ProcessBuilder("wmic process where name='OUTLOOK.EXE' get CommandLine");
final Process p=pb.start();
BufferedReader br=new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
StringBuilder sb = new StringBuilder();
while((line=br.readLine())!=null) sb.append(line);
System.out.println(sb.toString());
}
Separate the command argument should work.
import java.io.IOException;
public class WmicProcessRunner {
public static void main(String[] args) {
try {
ProcessBuilder processBuilder = new ProcessBuilder("wmic", "process", "where", "name='OUTLOOK.EXE'", "get",
"CommandLine");
processBuilder.inheritIO();
Process wmicProcess = processBuilder.start();
while (wmicProcess.isAlive()) {
Thread.sleep(1000);
}
wmicProcess.destroy();
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
In Java you can call a shell file like this:
public class Shell {
private static Shell rootShell = null;
private final Process proc;
private final OutputStreamWriter writer;
private Shell(String cmd) throws IOException {
this.proc = new ProcessBuilder(cmd).redirectErrorStream(true).start();
this.writer = new OutputStreamWriter(this.proc.getOutputStream(), "UTF-8");
}
public void cmd(String command) {
try {
writer.write(command+'\n');
writer.flush();
} catch (IOException e) { }
}
public void close() {
try {
if (writer != null) {
writer.close();
if(proc != null) {
proc.destroy();
}
}
} catch (IOException ignore) {}
}
public static void exec(String command) {
Shell.get().cmd(command);
}
public static Shell get() {
if (Shell.rootShell == null) {
while (Shell.rootShell == null) {
try {
Shell.rootShell = new Shell("su"); //Open with Root Privileges
} catch (IOException e) { }
}
}
return Shell.rootShell;
}
}
Shell.exec("echo " + bt.getLevel() + " > "+ flashfile);
right.
but I have a shell which giving an argument after executing it.
how can I pass that argument? I don't want user type anything to run this shell file. in another word, I want to fully automate a shell file.
If you want to automate a shell file with a Java programme, this can be done. You could even pipe a series of commands to this programme saved in a file and executing these as a batch.
You can execute commands batches of commands from like this:
java -cp experiments-1.0-SNAPSHOT.jar ConsoleReader < commands.txt
commands.txt is a file with a series of commands:
cmd /k date
cmd /k dir
netstat
ipconfig
Or you can with the same programme allow the user to execute commands on the command line.
Below you can find a sample programme which you can compile and be run in the above described manner.
What does it do?
It hooks a java.util.Scanner to the console input and consumes each line.
Then it spawns two threads which listen to the error and input streams and write out either to stderr or stdin.
Empty lines on the console are ignored
If you type "read " it will execute the commands on that file.
Source:
public class ConsoleReader {
public static void main(String[] args) throws IOException, DatatypeConfigurationException {
try(Scanner scanner = new Scanner(new BufferedInputStream(System.in), "UTF-8")) {
readFromScanner(scanner);
}
}
private static final Pattern FILE_INPUT_PAT = Pattern.compile("read\\s*([^\\s]+)");
private static void readFromScanner(Scanner scanner) {
while (scanner.hasNextLine()) {
try {
String command = scanner.nextLine();
if(command != null && !command.trim().isEmpty()) {
command = command.trim();
if("exit".equals(command)) {
break; // exit shell
}
else if(command.startsWith("read")) { // read from file whilst in the shell.
readFile(command);
}
else {
Process p = Runtime.getRuntime().exec(command);
Thread stdout = readFromStream(p.getInputStream(), System.out, "in");
Thread stderr = readFromStream(p.getErrorStream(), System.err, "err");
stdout.join(200);
stderr.join(200);
}
}
}
catch(Exception e) {
Logger.getLogger("ConsoleReader").log(Level.SEVERE, String.format("Failed to execute command %s", e));
}
}
}
private static void readFile(String command) throws FileNotFoundException {
Matcher m = FILE_INPUT_PAT.matcher(command);
if(m.matches()) {
String file = m.group(1);
File f = new File(file);
if (f.exists()) {
try (Scanner subScanner = new Scanner(f)) {
readFromScanner(subScanner);
}
}
}
else {
System.err.printf("Oops, could not find '%s'%n", command);
}
}
private static Thread readFromStream(InputStream stdin, PrintStream out, String name) throws IOException {
Thread thread = new Thread(() -> {
try (BufferedReader in = new BufferedReader(new InputStreamReader(stdin))) {
String line;
while ((line = in.readLine()) != null) {
out.println(line);
}
} catch (IOException e) {
Logger.getLogger("ConsoleReader").log(Level.SEVERE, "Failed to read from stream.", e);
}
}, name);
thread.setDaemon(true);
thread.start();
return thread;
}
}
Runtime.getRuntime().exec("src/[FILE LOCATION]");
I think this is the command you're looking for. Let me know if it works!
I try to code a Java program which uses Drozer (a tool written in Python to test vulnerabilities in Android app). I need to execute commands directly from Java and so far everything goes pretty well, but I have a problem when an interavtive session of drozer starts. It seems that the problem occurs when EOF needs to be handled, since ctrl + D also can't stop the session. Here is what I get after hitting ctrl + D
*** Unknown syntax: EOF
Here is the code I use to connect from Java to Drozer, after running it, my program starts infinite loop printing the same error: *** Unknown syntax: EOF.
Any other command works like a charm. Any ideas what do I do wrong?
Cheers
public class test1 {
public static void main(String a[]) throws InterruptedException, IOException {
List<String> commands = new ArrayList<String>();
List<String> commands1 = new ArrayList<String>();
commands.add("/usr/local/bin/drozer");
commands.add("console");
commands.add("connect");
ProcessBuilder pb = new ProcessBuilder(commands);
pb.redirectErrorStream(true);
try {
Process prs = pb.start();
Thread inThread = new Thread(new In(prs.getInputStream()));
inThread.start();
Thread.sleep(1000);
OutputStream writeTo = prs.getOutputStream();
writeTo.write("oops\n".getBytes());
writeTo.flush();
writeTo.close();
}catch (IOException e) {
e.printStackTrace();
}
}
}
class In implements Runnable {
private InputStream is;
public In(InputStream is) {
this.is = is;
}
#Override
public void run() {
try {
byte[] b = new byte[1024];
int size = 0;
while ((size = is.read(b)) != -1) {
System.out.println(new String(b));
}
is.close();
} catch (IOException ex) {
Logger.getLogger(In.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
Java is new to me.
I am executing a batch file using Runtime.getRuntime.exec(filename.bat) and this batch file executes a commandant encrypt.password -Dvalue=somevalue>log.txt and redirects its output to a log.txt file.
Problem that I am facing is batch file is working fine if I run it manually however when program executes it ,it just creates blank 'log.txt'
Content of mybat.bat batch file is as below:
cd/
c:
cd c:/ant_builds/thinclient
ant encrypt.password -Dvalue=someValue >C:/log.txt
Java code is as below:
Process p=Runtime.getRuntime.exec("C:\mybat.bat");
p.waitFor();
It seems that after creating the log file,meantime command is executing control comes out from process.
I have read almost 50 threads here however did not get the solution. Please help me out.
Use ProcessBuilder to create your process and call redirectOutput(File) to redirect and append output to a file.
Try this code:
public class Test {
ProcessBuilder builder;
Path log;
public Test() {
try
{
log = Paths.get("C:\\log.txt");
if (!Files.exists(log))
{
Files.createFile(log);
}
builder = new ProcessBuilder("ant", "encrypt.password", "-Dvalue=someValue");
builder.directory(Paths.get("C:\\ant_builds\\thinclient").toFile());
builder.redirectOutput(ProcessBuilder.Redirect.appendTo(log.toFile()));
builder.start();
}
catch (IOException e)
{
e.printStackTrace();
}
}
public static void main(String[] args) {
new Test();
}
}
For jdk 1.6 or less, use the following code:
public class Test {
ProcessBuilder builder;
Path log;
Process process;
BufferedReader br;
PrintWriter pw;
Charset charset = Charset.forName("UTF-8");
public Test() {
try {
log = new File("C:\\log.txt");
if (!log.exists()) {
log.createNewFile();
}
builder = new ProcessBuilder("ant", "encrypt.password","-Dvalue=someValue");
builder.directory(new File("C:\\ant_builds\\thinclient"));
builder.redirectErrorStream(true);
process = builder.start();
br = new BufferedReader(new InputStreamReader(process.getInputStream(),charset));
pw = new PrintWriter(new OutputStreamWriter(new FileOutputStream(log, true), charset));
(new Thread() {
public void run() {
try {
while (process.isAlive()) {
String s = null;
while ((s = br.readLine()) != null) {
pw.print(s);
pw.flush();
}
}
br.close();
pw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
new Test();
}
}
I'm not sure about the order and list of ProcessBuilder arguments so try to play with them to get your code working.
You can also read commands from a common file and redirect output and erros to a sepearate files. Redirect.appendTo is to avoid the process from overiting the existing logs.
Try this code:
try {
File commands = new File("D:/Sample/Commands.txt");
File output = new File("D:/Sample/Output.txt");
File errors = new File("D:/Sample/ErrorsLog.txt");
ProcessBuilder pb = new ProcessBuilder("cmd");
System.out.println(pb.redirectInput());
System.out.println(pb.redirectOutput());
System.out.println(pb.redirectError());
pb.redirectInput(commands);
pb.redirectError(Redirect.appendTo(errors));
pb.redirectOutput(Redirect.appendTo(output));
pb.redirectInput();
pb.redirectOutput();
pb.redirectError();
pb.start();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
I want to create diff of two files. I tried searching for code in Java that does it, but didnt find any simple code/ utility code for this. Hence, I thought if I can somehow run linux diff/sdiff command from my java code and make it return a file that stores the diff then it would be great.
Suppose there are two files fileA and fileB. I should be able to store their diff in a file called fileDiff through my java code. Then fetching data from fileDiff would be no big deal.
You can use java.lang.Runtime.exec to run simple code. This gives you back a Process and you can read its standard output directly without having to temporarily store the output on disk.
For example, here's a complete program that will showcase how to do it:
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class testprog {
public static void main(String args[]) {
String s;
Process p;
try {
p = Runtime.getRuntime().exec("ls -aF");
BufferedReader br = new BufferedReader(
new InputStreamReader(p.getInputStream()));
while ((s = br.readLine()) != null)
System.out.println("line: " + s);
p.waitFor();
System.out.println ("exit: " + p.exitValue());
p.destroy();
} catch (Exception e) {}
}
}
When compiled and run, it outputs:
line: ./
line: ../
line: .classpath*
line: .project*
line: bin/
line: src/
exit: 0
as expected.
You can also get the error stream for the process standard error, and output stream for the process standard input, confusingly enough. In this context, the input and output are reversed since it's input from the process to this one (i.e., the standard output of the process).
If you want to merge the process standard output and error from Java (as opposed to using 2>&1 in the actual command), you should look into ProcessBuilder.
You can also write a shell script file and invoke that file from the java code. as shown below
{
Process proc = Runtime.getRuntime().exec("./your_script.sh");
proc.waitFor();
}
Write the linux commands in the script file, once the execution is over you can read the diff file in Java.
The advantage with this approach is you can change the commands with out changing java code.
You need not store the diff in a 3rd file and then read from in. Instead you make use of the Runtime.exec
Process p = Runtime.getRuntime().exec("diff fileA fileB");
BufferedReader stdInput = new BufferedReader(new InputStreamReader(p.getInputStream()));
while ((s = stdInput.readLine()) != null) {
System.out.println(s);
}
try to use unix4j. it s about a library in java to run linux command. for instance if you got a command like:
cat test.txt | grep "Tuesday" | sed "s/kilogram/kg/g" | sort
in this program will become:
Unix4j.cat("test.txt").grep("Tuesday").sed("s/kilogram/kg/g").sort();
You can call run-time commands from java for both Windows and Linux.
import java.io.*;
public class Test{
public static void main(String[] args)
{
try
{
Process process = Runtime.getRuntime().exec("pwd"); // for Linux
//Process process = Runtime.getRuntime().exec("cmd /c dir"); //for Windows
process.waitFor();
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line;
while ((line=reader.readLine())!=null)
{
System.out.println(line);
}
}
catch(Exception e)
{
System.out.println(e);
}
finally
{
process.destroy();
}
}
}
Hope it Helps.. :)
Runtime run = Runtime.getRuntime();
//The best possible I found is to construct a command which you want to execute
//as a string and use that in exec. If the batch file takes command line arguments
//the command can be constructed a array of strings and pass the array as input to
//the exec method. The command can also be passed externally as input to the method.
Process p = null;
String cmd = "ls";
try {
p = run.exec(cmd);
p.getErrorStream();
p.waitFor();
}
catch (IOException e) {
e.printStackTrace();
System.out.println("ERROR.RUNNING.CMD");
}finally{
p.destroy();
}
The suggested solutions could be optimized using commons.io, handling the error stream, and using Exceptions. I would suggest to wrap like this for use in Java 8 or later:
public static List<String> execute(final String command) throws ExecutionFailedException, InterruptedException, IOException {
try {
return execute(command, 0, null, false);
} catch (ExecutionTimeoutException e) { return null; } /* Impossible case! */
}
public static List<String> execute(final String command, final long timeout, final TimeUnit timeUnit) throws ExecutionFailedException, ExecutionTimeoutException, InterruptedException, IOException {
return execute(command, 0, null, true);
}
public static List<String> execute(final String command, final long timeout, final TimeUnit timeUnit, boolean destroyOnTimeout) throws ExecutionFailedException, ExecutionTimeoutException, InterruptedException, IOException {
Process process = new ProcessBuilder().command("bash", "-c", command).start();
if(timeUnit != null) {
if(process.waitFor(timeout, timeUnit)) {
if(process.exitValue() == 0) {
return IOUtils.readLines(process.getInputStream(), StandardCharsets.UTF_8);
} else {
throw new ExecutionFailedException("Execution failed: " + command, process.exitValue(), IOUtils.readLines(process.getInputStream(), StandardCharsets.UTF_8));
}
} else {
if(destroyOnTimeout) process.destroy();
throw new ExecutionTimeoutException("Execution timed out: " + command);
}
} else {
if(process.waitFor() == 0) {
return IOUtils.readLines(process.getInputStream(), StandardCharsets.UTF_8);
} else {
throw new ExecutionFailedException("Execution failed: " + command, process.exitValue(), IOUtils.readLines(process.getInputStream(), StandardCharsets.UTF_8));
}
}
}
public static class ExecutionFailedException extends Exception {
private static final long serialVersionUID = 1951044996696304510L;
private final int exitCode;
private final List<String> errorOutput;
public ExecutionFailedException(final String message, final int exitCode, final List<String> errorOutput) {
super(message);
this.exitCode = exitCode;
this.errorOutput = errorOutput;
}
public int getExitCode() {
return this.exitCode;
}
public List<String> getErrorOutput() {
return this.errorOutput;
}
}
public static class ExecutionTimeoutException extends Exception {
private static final long serialVersionUID = 4428595769718054862L;
public ExecutionTimeoutException(final String message) {
super(message);
}
}
if the opening in windows
try {
//chm file address
String chmFile = System.getProperty("user.dir") + "/chm/sample.chm";
Desktop.getDesktop().open(new File(chmFile));
} catch (IOException ex) {
Logger.getLogger(Frame.class.getName()).log(Level.SEVERE, null, ex);
{
JOptionPane.showMessageDialog(null, "Terjadi Kesalahan", "Error", JOptionPane.WARNING_MESSAGE);
}
}
ProcessBuilder processBuilder = new ProcessBuilder();
// -- Linux --
// Run a shell command
processBuilder.command("bash", "-c", "ls /home/kk/");
// Run a shell script
//processBuilder.command("path/to/hello.sh");
// -- Windows --
// Run a command
//processBuilder.command("cmd.exe", "/c", "dir C:\\Users\\kk");
// Run a bat file
//processBuilder.command("C:\\Users\\kk\\hello.bat");
try {
Process process = processBuilder.start();
StringBuilder output = new StringBuilder();
BufferedReader reader = new BufferedReader(
new InputStreamReader(process.getInputStream()));
String line;
while ((line = reader.readLine()) != null) {
output.append(line + "\n");
}
int exitVal = process.waitFor();
if (exitVal == 0) {
System.out.println("Success!");
System.out.println(output);
System.exit(0);
} else {
//abnormal...
}
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}