Example usage for java.lang Runtime exec

Introduction

In this page you can find the example usage for java.lang Runtime exec.

Prototype

public Process exec(String cmdarray[]) throws IOException 

Source Link

Document

Executes the specified command and arguments in a separate process.

Usage

From source file:org.smartfrog.avalanche.client.sf.apps.utils.SystemUtils.java

public static void addUser(String user, Properties props) throws UtilsException {

    if ((null == user) || (user.length() == 0)) {
        log.error("User name cannot be null");
        throw new UtilsException("User name cannot be null");
    }/*from  w  ww .jav a  2s .c  o  m*/

    String cmd = "adduser";

    if ((null == props) || (props.isEmpty())) {
        log.error("Please provide user information....");
        throw new UtilsException("Please provide user information....");
    }

    String passwd = (String) props.getProperty("-p");
    if ((null == passwd) || (passwd.length() == 0)) {
        log.error("Password is not provided....Cannot create user");
        throw new UtilsException("Password is not provided...." + "Cannot create user");
    }
    String epasswd = jcrypt.crypt("Tb", passwd);
    if (epasswd.length() == 0) {
        log.error("Error in encrypting passwd...");
        throw new UtilsException("Error in encrypting passwd...");
    }
    props.setProperty("-p", epasswd);
    props.setProperty("-c", "User-" + user);

    String key = null;
    String value = null;
    Enumeration e = props.keys();
    while (e.hasMoreElements()) {
        key = (String) e.nextElement();
        value = (String) props.getProperty(key);
        if ((null != value) || (value.length() != 0))
            cmd += " " + key + " " + value;
        else
            cmd += " " + key;
    }

    cmd += " " + user;

    Process p = null;
    Runtime rt = Runtime.getRuntime();
    BufferedReader cmdError = null;
    int exitVal = 0;
    try {
        p = rt.exec(cmd);
        exitVal = p.waitFor();
        cmdError = new BufferedReader(new InputStreamReader(p.getErrorStream()));
        if (exitVal != 0) {
            String err = "Error in adding user " + user + "... returned with exit value 0 : ";
            log.error(err);
            String line = null;
            while ((line = cmdError.readLine()) != null) {
                log.error(line);
                err += line;
            }
            throw new UtilsException(err);
        }
    } catch (IOException ioe) {
        log.error(ioe);
        throw new UtilsException(ioe);
    } catch (InterruptedException ie) {
        log.error(ie);
        throw new UtilsException(ie);
    }

    log.info("User " + user + " added successfully");
}

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From source file:net.floodlightcontroller.queuepusher.QueuePusherSwitchMapper.java

/**
 * Runs the given command//  w w  w .  ja v a  2  s  .com
 * 
 * @param cmd Command to execute
 * @return 0: (int)exit code 1: (string)stdout 2: (string)stderr
 */

private static Object[] eval(String cmd) {

    Object[] rsp = new Object[3];
    Runtime rt = Runtime.getRuntime();
    Process proc = null;

    try {
        proc = rt.exec(cmd);
        proc.waitFor();
        rsp[0] = proc.exitValue();
    } catch (InterruptedException e) {
        rsp[0] = 1;
    } catch (IOException e) {
        rsp[0] = 1;
    } finally {
        if (proc == null) {
            rsp[0] = 1;
        } else {

            try {

                BufferedReader stdout = new BufferedReader(new InputStreamReader(proc.getInputStream()));
                BufferedReader stderr = new BufferedReader(new InputStreamReader(proc.getErrorStream()));

                String temp;
                StringBuilder sb = new StringBuilder();
                while ((temp = stdout.readLine()) != null) {
                    sb.append(temp);
                }

                rsp[1] = sb.toString();
                sb = new StringBuilder();
                while ((temp = stderr.readLine()) != null) {
                    sb.append(temp);
                }

                rsp[2] = sb.toString();

            } catch (IOException e) {
                rsp[0] = 1;
            }

        }
    }

    return rsp;

}

---

From source file:Main.java

public static int findProcessIdWithPidOf(String command) throws Exception {
    int procId = -1;
    Runtime r = Runtime.getRuntime();
    Process procPs = null;//ww  w  .  ja v a 2  s.  c om

    String baseName = new File(command).getName();
    // fix contributed my mikos on 2010.12.10
    procPs = r.exec(new String[] { SHELL_CMD_PIDOF, baseName });
    // procPs = r.exec(SHELL_CMD_PIDOF);

    BufferedReader reader = new BufferedReader(new InputStreamReader(procPs.getInputStream()));
    String line = null;

    while ((line = reader.readLine()) != null) {

        try {
            // this line should just be the process id
            procId = Integer.parseInt(line.trim());
            break;
        } catch (NumberFormatException e) {
            Log.e("TorServiceUtils", "unable to parse process pid: " + line, e);
        }
    }

    return procId;

}

---

From source file:net.pickapack.io.cmd.CommandLineHelper.java

/**
 *
 * @param cmd//  ww w. j  a v  a2s . c o m
 * @param waitFor
 * @return
 */
public static int invokeNativeCommand(String[] cmd, boolean waitFor) {
    try {
        Runtime r = Runtime.getRuntime();
        final Process ps = r.exec(cmd);
        //            ProcessBuilder pb = new ProcessBuilder(cmd);
        //            Process ps = pb.start();

        new Thread() {
            {
                setDaemon(true);
            }

            @Override
            public void run() {
                try {
                    IOUtils.copy(ps.getInputStream(), System.out);
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }.start();

        new Thread() {
            {
                setDaemon(true);
            }

            @Override
            public void run() {
                try {
                    IOUtils.copy(ps.getErrorStream(), System.out);
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }.start();

        if (waitFor) {
            int exitValue = ps.waitFor();
            if (exitValue != 0) {
                System.out.println("WARN: Process exits with non-zero code: " + exitValue);
            }

            ps.destroy();

            return exitValue;
        }

        return 0;
    } catch (Exception e) {
        e.printStackTrace();
        return -1;
    }
}

---

From source file:protubuf.MessageHelper.java

public static void registerMessage(String protoFile) throws IdgsException {
    if (fileCache.containsKey(protoFile)) {
        return;/*from ww w . jav a2s . c  om*/
    }
    String source = new File(protoFile).getParent();
    String cmd = "protoc -I=" + source + " --descriptor_set_out=" + protoFile + ".desc " + protoFile;
    log.info(cmd);

    Runtime run = Runtime.getRuntime();
    Process p = null;
    try {
        p = run.exec(cmd);
    } catch (IOException e) {
        log.error("create desc file of proto file " + protoFile + " error");
        throw new IdgsException(e);
    }

    try {
        if (p.waitFor() != 0) {
            if (p.exitValue() == 1) {
                log.error("create desc file of proto file " + protoFile + " error.");
                throw new IdgsException("create desc file of proto file " + protoFile + " error.");
            }
        }
    } catch (InterruptedException e) {
        log.error("create desc file of proto file " + protoFile + " error.");
        throw new IdgsException(e);
    }

    File file = new File(protoFile + ".desc");
    FileInputStream fin = null;
    try {
        log.info("register file " + protoFile);
        fin = new FileInputStream(file);
        FileDescriptorSet descriptorSet = FileDescriptorSet.parseFrom(fin);
        for (FileDescriptorProto fdp : descriptorSet.getFileList()) {
            FileDescriptor fd = FileDescriptor.buildFrom(fdp, new FileDescriptor[] {});
            for (Descriptor descriptor : fd.getMessageTypes()) {
                log.info("register message " + descriptor.getFullName());
                cache.put(descriptor.getFullName(), descriptor);
            }
        }

        fileCache.put(protoFile, descriptorSet);
    } catch (FileNotFoundException e) {
        log.error("desc file of proto file " + protoFile + " is not found.");
        throw new IdgsException(e);
    } catch (IOException e) {
        log.error("parse desc file of proto file " + protoFile + " error");
        throw new IdgsException(e);
    } catch (DescriptorValidationException e) {
        log.error("register proto file " + protoFile + " error");
        throw new IdgsException(e);
    } finally {
        if (fin != null) {
            try {
                fin.close();
            } catch (IOException e) {
                throw new IdgsException(e);
            }
        }
    }

    file.delete();
}

---

From source file:Main.java

public static int findProcessIdWithPidOf(String command) throws Exception {

    int procId = -1;

    Runtime r = Runtime.getRuntime();

    Process procPs = null;/*w  w  w.  j av  a2 s. c  o  m*/

    String baseName = new File(command).getName();
    //fix contributed my mikos on 2010.12.10
    procPs = r.exec(new String[] { SHELL_CMD_PIDOF, baseName });
    //procPs = r.exec(SHELL_CMD_PIDOF);

    BufferedReader reader = new BufferedReader(new InputStreamReader(procPs.getInputStream()));
    String line = null;

    while ((line = reader.readLine()) != null) {

        try {
            //this line should just be the process id
            procId = Integer.parseInt(line.trim());
            break;
        } catch (NumberFormatException e) {
            Log.e("TorServiceUtils", "unable to parse process pid: " + line, e);
        }
    }

    return procId;

}

---

From source file:Main.java

public static int findProcessIdWithPidOf(String command) throws Exception {

    int procId = -1;

    Runtime r = Runtime.getRuntime();

    Process procPs = null;/* ww w  .  j  av  a  2s. co  m*/

    String baseName = new File(command).getName();
    // fix contributed my mikos on 2010.12.10
    procPs = r.exec(new String[] { SHELL_CMD_PIDOF, baseName });
    // procPs = r.exec(SHELL_CMD_PIDOF);

    BufferedReader reader = new BufferedReader(new InputStreamReader(procPs.getInputStream()));
    String line = null;

    while ((line = reader.readLine()) != null) {

        try {
            // this line should just be the process id
            procId = Integer.parseInt(line.trim());
            break;
        } catch (NumberFormatException e) {
            Log.e("TorServiceUtils", "unable to parse process pid: " + line, e);
        }
    }

    return procId;

}

---

From source file:theofilin.CameraApps.java

public static void StartCamera(JLabel tampil, int width, int height) throws IOException {
    ActionListener actionlistener;
    actionlistener = new ActionListener() {
        @Override/*from   w w  w.ja  va  2s .  c o m*/
        public void actionPerformed(ActionEvent ae) {

            try {
                Runtime rt = Runtime.getRuntime();
                String command = "raspistill -n -t 1 -drc high -ISO 200 " + "-w " + width + " -h " + height
                        + " -o -";
                Process p = rt.exec(command);

                InputStream is = p.getInputStream();
                byte[] curr = IOUtils.toByteArray(is);
                ImageIcon disp = new ImageIcon(curr);
                tampil.setIcon(disp);
            } catch (IOException ex) {
                Logger.getLogger(CameraApps.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    };
    timer = new Timer(100, actionlistener);
    timer.start();
}

---

From source file:org.jkcsoft.java.util.OsHelper.java

public static boolean isExecutable(File file, Log log) throws Exception {
    boolean is = true;

    if (isLinux()) {
        // e.g., /usr/bin/test -x /home/coles/build/build-tsess.sh && echo yes || echo no
        try {/*from w  w  w  .ja  v  a 2s.  c  o  m*/

            Runtime rt = Runtime.getRuntime();
            String stTest = "/usr/bin/test -x " + file.getAbsolutePath() + " && echo yes || echo no";
            log.debug("Command=" + stTest);

            Process p = rt.exec(stTest);

            BufferedReader stdInput = new BufferedReader(new InputStreamReader(p.getInputStream()));

            BufferedReader stdError = new BufferedReader(new InputStreamReader(p.getErrorStream()));

            String stLine = null;

            // read any errors from the attempted command
            log.info("Here is the standard error of the command (if any):");
            while ((stLine = stdError.readLine()) != null) {
                log.warn(stLine);
            }

            // read the output from the command
            StringBuilder sbResponse = new StringBuilder();
            while ((stLine = stdInput.readLine()) != null) {
                sbResponse.append(stLine);
            }

            is = "yes".equalsIgnoreCase(sbResponse.toString());

        } catch (IOException e) {
            log.error("In isExecutable()", e);
            throw e;
        }
    } else {
        log.info("Not Linux -- assume executable");
    }

    return is;
}

---

From source file:com.grarak.romswitcher.Utils.Utils.java

public static void deleteFiles(String path) {

    File file = new File(path);

    if (file.exists()) {
        String deleteCmd = "rm -rf " + path;
        Runtime runtime = Runtime.getRuntime();
        try {//from   w w w  .ja v  a  2 s  . c  om
            runtime.exec(deleteCmd);
        } catch (IOException e) {
        }
    }
}

---

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