file.toAbsolutePath().toString(),
                        "5.32",
                        "5.27"
                    });

                    try {
                        assertEquals(0, p.waitFor(), "Unexpected exit code");
                    } catch (InterruptedException e) {
                        throw new InterruptedIOException(e.toString());
                    }

        Process process = command.execute()
        def stdoutFuture = readStreamAsync(process.inputStream)
        def stderrFuture = readStreamAsync(process.errorStream)

        int returnCode = process.waitFor()
        String stdout = stdoutFuture.get()
        String stderr = stderrFuture.get()
        return new ExecResult(stderr: stderr, stdout: stdout, returnCode: returnCode)
    }

        ALL.stream()
                .filter(s -> !add.containsKey(s))
                .forEach(k -> processBuilder.environment().remove(k));
        Process process = processBuilder.start();
        process.waitFor();
        return new String(process.getInputStream().readAllBytes());
    }

            ist.start();

            if (logger.isDebugEnabled()) {
                logger.debug("Waiting for {}.", getName());
            }

            if (p.waitFor(commandTimeout + commandDestroyTimeout, TimeUnit.MILLISECONDS)) {
                if (task.isExecuted()) {
                    // Process was killed by the timer.

            });

            final InputStreamThread it = jobProcess.getInputStreamThread();
            it.start();

            final Process currentProcess = jobProcess.getProcess();
            currentProcess.waitFor();
            it.join(5000);

            final int exitValue = currentProcess.exitValue();

            if (logger.isInfoEnabled()) {

            } catch (final InterruptedException e) {
                logger.warn("Interrupted to wait a process.", e);
            }
            try {
                process.destroyForcibly().waitFor(processDestroyTimeout, TimeUnit.SECONDS);
                return process.exitValue();
            } catch (final Exception e) {
                logger.error("Could not destroy a process correctly.", e);
            }

            ByteArrayOutputStream stdout = connectStream(process.getInputStream(), latch);
            ByteArrayOutputStream stderr = connectStream(process.getErrorStream(), latch);

            process.waitFor(1, TimeUnit.MINUTES);
            latch.await(1, TimeUnit.MINUTES);
            return new ExecResult(args, process.exitValue(), stdout.toString(UTF_8), stderr.toString(UTF_8));
        } catch (Exception e) {

                    Thread err = new Thread(new StreamGobbler(process.getErrorStream(), shellContext.logger::error));
                    out.start();
                    err.start();
                    int exitCode = process.waitFor();
                    out.join();
                    err.join();
                    if (exitCode != 0) {
                        shellContext.logger.error("Shell command exited with code " + exitCode);

  }

  /** Identifies all waitForXxx methods, which must be called while occupying the monitor. */
  private static boolean isWaitFor(Method method) {
    return method.getName().startsWith("waitFor");
  }

  /** Determines whether the given method takes a Guard as its first parameter. */
  private static boolean isGuarded(Method method) {
    Class<?>[] parameterTypes = method.getParameterTypes();

            });

            final InputStreamThread it = jobProcess.getInputStreamThread();
            it.start();

            final Process currentProcess = jobProcess.getProcess();
            currentProcess.waitFor();
            it.join(5000);

            final int exitValue = currentProcess.exitValue();

            if (logger.isInfoEnabled()) {