Does 

    java -jar foo.jar %*

meet your needs?  It should add all parameters from the batch execution to your application call within the batch file.

Say I have 4 div elements with class `.navlink`, which, when clicked, use `.data()` to set a key called `&#39;selected&#39;`, to a value of `true`:

    $(&#39;.navlink&#39;)click(function() { $(this).data(&#39;selected&#39;, true); })


Every time a new `.navlink` is clicked, I would like to store the previously selected `navlink` for later manipulation. Is there a quick and easy way to select an element based on what was stored using `.data()`?

There don&#39;t seem to be any jQuery **:filters** that fit the bill, and I tried the following (within the same click event), but for some reason it doesn&#39;t work:

    var $previous = $(&#39;.navlink&#39;).filter( 
        function() { $(this).data(&quot;selected&quot;) == true }
    );

I know that there are other ways to accomplish this, but right now I&#39;m mostly just curious if it can be done via `.data()`.


Filter element based on .data() key/value

I was helping somebody out with his JavaScript code and my eyes were caught by a section that looked like that:

    function randOrd(){
      return (Math.round(Math.random())-0.5);
    }
    coords.sort(randOrd);
    alert(coords);

My first though was: **hey, this can&#39;t possibly work!** But then I did some experimenting and found that it indeed at least seems to provide nicely randomized results.

Then I did some web search and almost at the top found an [article][1] from which this code was most ceartanly copied. Looked like a pretty respectable site and author...

But my gut feeling tells me, that this must be wrong. Especially as the sorting algorithm is not specified by ECMA standard. I think different sorting algoritms will result in different non-uniform shuffles. Some sorting algorithms may probably even loop infinitely...

But what do you think?

And as another question... how would I now go and measure how random the results of this shuffling technique are?

**update:** I did some measurements and posted the results below as one of the answers.

  [1]: http://javascript.about.com/library/blsort2.htm

Is it correct to use JavaScript Array.sort() method for shuffling?

I would like to call a jar file from a windows batch file. One requirement is to be able to pass all the batch file arguments as-is to the jar file invocation. For example,

Required Command line:

    foo.bat --flag1=x --flag2=y --flag3=z

The batch file `foo.bat` should invoke `foo.jar` like follows:

    java -jar foo.jar --flag1=x --flag2=y --flag3=z

**How do I make the batch file do this?** &lt;br&gt;
I can do some batch variable magic with %&lt;var&gt; to do this, but is there a simpler way to do this?



Redirecting passed arguments to a windows batch file

I would like to call a jar file from a windows batch file. One requirement is to be able to pass all the batch file arguments as-is to the jar file invocation. For example,
Required Command line:
<pre><code class="hljs language-css">foo.bat --flag1=x --flag2=y --flag3=z
</code></pre>
The batch file <code>foo.bat</code> should invoke <code>foo.jar</code> like follows:
<pre><code class="hljs language-css">java -jar foo.jar --flag1=x --flag2=y --flag3=z
</code></pre>
How do I make the batch file do this? 
I can do some batch variable magic with %<var> to do this, but is there a simpler way to do this?</var>

In the same vein as *[Quickly create a large file on a Linux system][1]*, 
I&#39;d like to quickly create a large file on a Windows system. By large I&#39;m thinking 5&amp;nbsp;GB. The content doesn&#39;t matter. A built-in command or short batch file would be preferable, but I&#39;ll accept an application if there are no other easy ways.

  [1]: https://stackoverflow.com/questions/257844/quickly-create-a-large-file-on-a-linux-system


Quickly create large file on a Windows system

I guess the question says it all.

I want to fork on Windows. What is the most similar operation and how do I use it.

What is the closest thing Windows has to fork()?

What command can I put at the end of a batch file to prevent auto-closing of the console after the execution of the file?

How to prevent auto-closing of console after the execution of batch file

I would like to convert this `/bin/sh` syntax into a widely compatible Windows batch script:

    host=`hostname`
    echo ${host}

How to do this so that it&#39;ll work on any Windows Vista, Windows XP, and Windows 2000 machine?

To clarify: I would then like to go on in the program and use the hostname as stored in the variable `host`.  In other words, the larger goal of the program is not to simply echo the hostname.


How to store the hostname in a variable in a .bat file?

Java&#39;s `File.renameTo()` is problematic, especially on Windows, it seems.
As the [API documentation][1] says,

&gt; Many aspects of the behavior of this
&gt; method are inherently
&gt; platform-dependent: The rename
&gt; operation might not be able to move a
&gt; file from one filesystem to another,
&gt; it might not be atomic, and it might
&gt; not succeed if a file with the
&gt; destination abstract pathname already
&gt; exists. The return value should always
&gt; be checked to make sure that the
&gt; rename operation was successful.

In my case, as part of an upgrade procedure, I need to move (rename) a directory that may contain gigabytes of data (lots of subdirectories and files of varying sizes). The move is always done within the same partition/drive, so there&#39;s no real need to physically move all the files on disk.

There *shouldn&#39;t* be any file locks to the contents of the dir to be moved, but still, quite often, renameTo() fails to do its job and returns false. (I&#39;m just guessing that perhaps some file locks expire somewhat arbitrarily on Windows.)

Currently I have a fallback method that uses copying &amp; deleting, but this sucks because it may take **a lot** of time, depending on the size of the folder. I&#39;m also considering simply documenting the fact that the user can move the folder manually to avoid waiting for hours, potentially. But the Right Way would obviously be something automatic and quick.

So my question is, **do you know an alternative, reliable approach to do a quick move/rename with Java on Windows**, either with plain JDK or some external library. Or if you know an *easy* way to detect and release any file locks for a given folder and *all of its contents* (possibly thousands of individual files), that would be fine too.

---

**Edit**: In this particular case, it seems we got away using just `renameTo()` by taking a few more things into account; see [this answer][2].


  [1]: http://java.sun.com/javase/6/docs/api/java/io/File.html#renameTo%28java.io.File%29
  [2]: https://stackoverflow.com/questions/1000183/reliable-file-renameto-alternative-on-windows/1006489#1006489

Reliable File.renameTo() alternative on Windows?

I have a storage folder on a network in which all users will store their active data on a server. Now that server is going to be replaced by a new one due to place problem so I need to copy sub folders files from the old server storage folder to new server storage folder. I have below ex:

from `\Oldeserver\storage\data &amp; files`    to `\New server\storage\data &amp; files`. 


Batch file to copy files from one folder to another folder

We have a batch job that runs every day and copies a file to a pickup folder. I want to also take a copy of that file and drop it into an archive folder with the filename

     yyyy-MM-dd.log

What&#39;s the easiest way to do this in a Windows batch job?

I&#39;m basically looking for an equivalent of this Unix command:

    cp source.log `date +%F`.log


Creating a file name as a timestamp in a batch job

What I want to do is get the NAME of a variable passed to a function *and* the VALUE of that variable, and only have to pass in one variable to the function. So:

    var x = &quot;anything&quot;;
    
    function showName() {
    
    }
    
    showName(x);
or

    showName(&quot;x&quot;);


Which will return: &quot;x = anything&quot;.

Right now, I have to specify the variable twice:

    showName(&quot;x&quot;, x);

In order to get the name and value of the variable I am passing in. 

Note that I am not interested in the name of argument in the prototype of showName, but the name of the variable in the calling function.  Also, the variable passed may be local, so I can&#39;t use the window object to find the variable.

JavaScript: Get Argument Value and NAME of Passed Variable

In C, getopt_long does not parse the optional arguments to command line parameters parameters.

When I run the program, the optional argument is not recognized like the example run below.

    $ ./respond --praise John
    Kudos to John
    $ ./respond --blame John
    You suck !
    $ ./respond --blame
    You suck !

Here is the test code.

    #include &lt;stdio.h&gt;
    #include &lt;getopt.h&gt;
    
    int main(int argc, char ** argv )
    {
        int getopt_ret, option_index;
        static struct option long_options[] = {
                   {&quot;praise&quot;,  required_argument, 0, &#39;p&#39;},
                   {&quot;blame&quot;,  optional_argument, 0, &#39;b&#39;},
                   {0, 0, 0, 0}       };
        while (1) {
            getopt_ret = getopt_long( argc, argv, &quot;p:b::&quot;,
                                      long_options,  &amp;option_index);
            if (getopt_ret == -1) break;
    
            switch(getopt_ret)
            {
                case 0: break;
                case &#39;p&#39;:
                    printf(&quot;Kudos to %s\n&quot;, optarg); break;
                case &#39;b&#39;:
                    printf(&quot;You suck &quot;);
                    if (optarg)
                        printf (&quot;, %s!\n&quot;, optarg);
                    else
                        printf (&quot;!\n&quot;, optarg);
                    break;
                case &#39;?&#39;:
                    printf(&quot;Unknown option\n&quot;); break;
            }
        } 
        return 0;
    }

getopt does not parse optional arguments to parameters

For years, I have used the `cmd/DOS/Windows` shell and passed command-line arguments to batch files. For example, I have a file, `zuzu.bat` and in it, I access `%1`, `%2`, etc. Now, I want to do the same when I call a `PowerShell` script `when I am in a Cmd.exe shell`. I have a script, `xuxu.ps1` (and I&#39;ve added PS1 to my PATHEXT variable and associated PS1 files with PowerShell). But no matter what I do, I seem unable to get anything from the `$args` variable. It always has length 0.

If I am in a `PowerShell` shell, instead of `cmd.exe`, it works (of course). But I&#39;m not yet comfortable enough to live in the PowerShell environment full time. I don&#39;t want to type `powershell.exe -command xuxu.ps1 p1 p2 p3 p4`. I want to type `xuxu p1 p2 p3 p4`. 

Is this possible, and if so, how?

The sample I cannot get to work is trivial, foo.ps1:

    Write-Host &quot;Num Args:&quot; $args.Length;
    foreach ($arg in $args) {
        Write-Host &quot;Arg: $arg&quot;;
    }

The results are always like this:

    C:\temp&gt; foo
    Num Args: 0
    C:\temp&gt; foo a b c d
    Num Args: 0
    c:\temp&gt;


How to pass command-line arguments to a PowerShell ps1 file

Is it possible to convert an array in JavaScript into a function argument sequence? Example:

    run({ &quot;render&quot;: [ 10, 20, 200, 200 ] });

    function run(calls) {
      var app = .... // app is retrieved from storage
      for (func in calls) {
        // What should happen in the next line?
        var args = ....(calls[func]);
        app[func](args);  // This is equivalent to app.render(10, 20, 200, 200);
      }
    }

Converting an array to a function arguments list

How are &quot;keyword arguments&quot; different from regular arguments? Can&#39;t all arguments be passed as `name=value` instead of using positional syntax?

Content Type	Original Author	Original Content on Stackoverflow
Question	Krishna Gopalakrishnan	View Question on Stackoverflow
Solution 1 - Windows	tschaible	View Answer on Stackoverflow

Redirecting passed arguments to a windows batch file

Windows Problem Overview

Windows Solutions

Solution 1 - Windows

Is it correct to use JavaScript Array.sort() method for shuffling?

Filter element based on .data() key/value

Attributions