src/main/java/org/apache/commons/exec/launcher/OS2CommandLauncher.java [39:66]:
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        super(launcher);
    }

    /**
     * Launches the given command in a new process, in the given working
     * directory.
     *
     * @param cmd
     *            the command line to execute as an array of strings
     * @param env
     *            the environment to set as an array of strings
     * @param workingDir
     *            working directory where the command should run
     * @throws IOException
     *             forwarded from the exec method of the command launcher
     */
    @Override
    public Process exec(final CommandLine cmd, final Map<String, String> env,
            final File workingDir) throws IOException {
        if (workingDir == null) {
            return exec(cmd, env);
        }

        final CommandLine newCmd = new CommandLine("cmd");
        newCmd.addArgument("/c");
        newCmd.addArguments(cmd.toStrings());

        return exec(newCmd, env);
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src/main/java/org/apache/commons/exec/launcher/WinNTCommandLauncher.java [32:61]:
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        super(launcher);
    }

    /**
     * Launches the given command in a new process, in the given working
     * directory.
     *
     * @param cmd
     *            the command line to execute as an array of strings
     * @param env
     *            the environment to set as an array of strings
     * @param workingDir
     *            working directory where the command should run
     * @throws IOException
     *             forwarded from the exec method of the command launcher
     */
    @Override
    public Process exec(final CommandLine cmd, final Map<String, String> env,
            final File workingDir) throws IOException {
        if (workingDir == null) {
            return exec(cmd, env);
        }

        // Use cmd.exe to change to the specified directory before running
        // the command
        final CommandLine newCmd = new CommandLine("cmd");
        newCmd.addArgument("/c");
        newCmd.addArguments(cmd.toStrings());

        return exec(newCmd, env);
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