Example usage for org.apache.hadoop.util Shell execCommand

Introduction

In this page you can find the example usage for org.apache.hadoop.util Shell execCommand.

Prototype

public static String execCommand(Map<String, String> env, String[] cmd, long timeout) throws IOException 

Source Link

Document

Static method to execute a shell command.

Usage

From source file:ApplicationMaster.java

License:Apache License

/**
 * Dump out contents of $CWD and the environment to stdout for debugging
 *///from  w  w  w  .ja  v  a2 s.c  o  m
private void dumpOutDebugInfo() {

    LOG.info("Dump debug output");
    Map<String, String> envs = System.getenv();
    for (Map.Entry<String, String> env : envs.entrySet()) {
        LOG.info("System env: key=" + env.getKey() + ", val=" + env.getValue());
        System.out.println("System env: key=" + env.getKey() + ", val=" + env.getValue());
    }

    BufferedReader buf = null;
    try {
        String lines = Shell.WINDOWS ? Shell.execCommand("cmd", "/c", "dir") : Shell.execCommand("ls", "-al");
        buf = new BufferedReader(new StringReader(lines));
        String line = "";
        while ((line = buf.readLine()) != null) {
            LOG.info("System CWD content: " + line);
            System.out.println("System CWD content: " + line);
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        IOUtils.cleanup(LOG, buf);
    }
}

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From source file:io.hops.tensorflow.ApplicationMaster.java

License:Apache License

/**
 * Dump out contents of $CWD and the environment to stdout for debugging
 *//*  w w w.ja  v  a  2 s  .c o  m*/
private void dumpOutDebugInfo() {
    LOG.info("Dump debug output");
    Map<String, String> envs = System.getenv();
    for (Map.Entry<String, String> env : envs.entrySet()) {
        LOG.info("System env: key=" + env.getKey() + ", val=" + env.getValue());
        System.out.println("System env: key=" + env.getKey() + ", val=" + env.getValue());
    }

    BufferedReader buf = null;
    try {
        String lines = Shell.WINDOWS ? Shell.execCommand("cmd", "/c", "dir") : Shell.execCommand("ls", "-al");
        buf = new BufferedReader(new StringReader(lines));
        String line = "";
        while ((line = buf.readLine()) != null) {
            LOG.info("System CWD content: " + line);
            System.out.println("System CWD content: " + line);
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        IOUtils.cleanup(LOG, buf);
    }
}

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From source file:org.apache.hive.jdbc.TestSSL.java

License:Apache License

private int execCommand(String cmd) throws Exception {
    int exitCode;
    try {//from ww w  .  j  a  v a  2s. c om
        String output = Shell.execCommand("bash", "-c", cmd);
        LOG.info("Output from '" + cmd + "': " + output);
        exitCode = 0;
    } catch (Shell.ExitCodeException e) {
        exitCode = e.getExitCode();
        LOG.info("Error executing '" + cmd + "', exitCode = " + exitCode, e);
    }
    return exitCode;
}

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From source file:org.apache.sqoop.util.DirectImportUtils.java

License:Apache License

/**
 * Executes chmod on the specified file, passing in the mode string 'modstr'
 * which may be e.g. "a+x" or "0600", etc.
 * @throws IOException if chmod failed./*from   ww w .java2 s.c  o  m*/
 */
public static void setFilePermissions(File file, String modstr) throws IOException {
    // Set this file to be 0600. Java doesn't have a built-in mechanism for this
    // so we need to go out to the shell to execute chmod.
    try {
        Shell.execCommand("chmod", modstr, file.toString());
    } catch (IOException ioe) {
        // Shell.execCommand will throw IOException on exit code != 0.
        LOG.error("Could not chmod " + modstr + " " + file.toString());
        throw new IOException("Could not ensure password file security.", ioe);
    }
}

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