You can use :

    copy /b/v/y

See [SS64 on COPY][1].


  [1]: http://ss64.com/nt/copy.html

Add `/y` to the command line of `xcopy`:

Example: 

    xcopy /y c:\mmyinbox\test.doc C:\myoutbox

you need to simply add /Y

    xcopy /s c:\mmyinbox\test.doc C:\myoutbox /Y

and if you&#39;re using path with spaces, try this

    xcopy /s &quot;c:\mmyinbox\test.doc&quot; &quot;C:\myoutbox&quot; /Y

If the copy command is run from within a batch job you do not need to use the /Y switch: it will overwrite existing files.

For copying one file to another directory overwriting without any prompt i ended up using the simply COPY command:

    copy /Y &quot;.\mySourceFile.txt&quot; &quot;..\target\myDestinationFile.txt&quot;

A command that would copy in any case

    xcopy &quot;path\source&quot; &quot;path\destination&quot; /s/h/e/k/f/c/y

You can refer **Windows command prompt** help using following command : `xcopy /?`

If destination file is read only use `/y/r`

    xcopy /y/r source.txt dest.txt


Here&#39;s what worked for me to copy and overwrite a file from B:\ to Z:\ drive in a batch script.

    echo F| XCOPY B:\utils\MyFile.txt Z:\Backup\CopyFile.txt /Y

The &quot;/Y&quot; parameter at the end overwrites the destination file, if it exists.

The standard checkboxes rendered in most browsers are quite small and don’t increase in size even when a larger font is used.  What is the best, browser-independent way to display larger checkboxes?

Checkboxes in web pages – how to make them bigger?

I&#39;m using the following regex

    ^[a-zA-Z0-9\&#39;,!;\?\$\^:\\\/`\|~&amp;\&quot; @#%\*\{}_\+\.\s=-]{1,1000}$

I know it&#39;s ugly, but so far it serves its purpose other than the backslash not being allowed as I think it should because it&#39;s escaped, I also tried `\\` instead of `\\\` but same results. Any ideas?

Can&#39;t escape the backslash with regex?

The following command copies and moves a file but I also need it to overwrite the file it&#39;s replacing.

    xcopy /s c:\mmyinbox\test.doc C:\myoutbox

How to overwrite existing files in batch?

<p>The following command copies and moves a file but I also need it to overwrite the file it's replacing.</p>
<pre><code class="hljs language-bash">xcopy /s c:\mmyinbox\test.doc C:\myoutbox
</code></pre>


How do I check if the current batch script has admin rights?

I know how to make it call itself with runas but not how to check for admin rights. The only solutions I&#39;ve seen are crude hack jobs or use external programs. Well, actually I don&#39;t care if it is a hack job as long as it works on Windows XP and newer.

Batch script: how to check for admin rights

I ran into [ss64.com](http://www.ss64.com) which provides good help regarding how to write batch scripts that the Windows Command Interpreter will run.

However, I have been unable to find a good explanation of the **grammar** of batch scripts, how things expand or do not expand, and how to escape things.

Here are sample questions that I have not been able to solve:

 * How is the quote system managed? I made a [TinyPerl](http://tinyperl.sourceforge.net/) script  
   ( `foreach $i (@ARGV) { print &#39;*&#39; . $i ; }` ), compiled it and called it this way :
   * `my_script.exe &quot;a &quot;&quot;b&quot;&quot; c&quot;` → output is  `*a &quot;b*c`
   * `my_script.exe &quot;&quot;&quot;a b c&quot;&quot;&quot;` → output it `*&quot;a*b*c&quot;`
 * How does the internal `echo` command work? What is expanded inside that command?
 * Why do I have to use `for [...] %%I` in file scripts, but `for [...] %I` in interactive sessions?
 * What are the escape characters, and in what context? How to escape a percent sign? For example, how can I echo `%PROCESSOR_ARCHITECTURE%` literally? I found that `echo.exe %&quot;&quot;PROCESSOR_ARCHITECTURE%` works, is there a better solution?
 * How do pairs of `%` match? Example:
   * `set b=a` , `echo %a %b% c%` → `%a a c%`
   * `set a =b`, `echo %a %b% c%` → `bb% c%`
 * How do I ensure a variable passes to a command as a single argument if ever this variable contains double quotes?
 * How are variables stored when using the `set` command? For example, if I do `set a=a&quot; b` and then `echo.%a%` I obtain `a&quot; b`. If I however use `echo.exe` from the UnxUtils, I get `a b`. How comes `%a%` expands in a different way?

Thank you for your lights.


How does the Windows Command Interpreter (CMD.EXE) parse scripts?

Can anybody tell me how to do the following in in a Windows batch script?  (`*.bat`):

* Create a folder only if it doesn&#39;t already exist

In more detail, I want to create a folder named `VTS` on the `C:\` drive, but only if that folder doesn&#39;t already exist.  I don&#39;t want to overwrite the contents of the folder if it already exists and the batch is executed.


Create folder with batch but only if it doesn&#39;t already exist

I just can&#39;t seem to find a way on the command line to say &quot;copy all the files from directory A to directory B, but if the file already exists in directory B, don&#39;t overwrite it, no matter which file is newer, and don&#39;t prompt me.&quot;

I have been through copy, move, xcopy &amp; robocopy, and the closest I can get is that you can tell robocopy &quot;copy A to B, but don&#39;t overwrite newer files with older files,&quot; but that doesn&#39;t work for me. I looked at xxcopy, but discarded it, as I don&#39;t want to have a third-party dependency on a Visual Studio post-build event that will require other SVN users to have that tool installed in order to do the build.

I want to add a command line to the post-build event in Visual&amp;nbsp;Studio&amp;nbsp;2010 so that the files that are generated from the [T4][1] templates for new [EF][2] model objects get distributed to the project folders to which they belong, but regenerated files for existing objects don&#39;t overwrite potentially edited destination files.

Since the T4 template regenerates, the source file is always newer, and I can&#39;t use the &quot;newer&quot; switch reliably, I don&#39;t think.

I use partial classes for those items for which I can, but there are other things I generate that can&#39;t use partial classes (e.g. generating a default EditorTemplate or DisplayTemplate *.ascx file).

Any one have any similar problems they have solved?

  [1]: http://en.wikipedia.org/wiki/Text_Template_Transformation_Toolkit
  [2]: http://en.wikipedia.org/wiki/ADO.NET_Entity_Framework


Copy files without overwrite

I have a batch file to copy over files from Visual Studio to my Web folder.  I want to copy all files in my web project, EXCEPT for *.cs files.  I can&#39;t seem to get this to work:

    xcopy /r /d /i /s /y /exclude:&quot;.cs&quot; C:\dev\apan C:\web\apan

Any tips?  I just get exit code 4 when I try to run this.

/exclude in xcopy just for a file type

I have a directory, &#39;Dst Directory&#39;, which has files and folders in it and I have &#39;src Directory&#39; which also has files and folders in it. What I want to do is move the contents of &#39;src Directory&#39; to &#39;Dst Directory&#39; and overwrite anyfiles that exist with the same name. So for example &#39;Src Directory\\file.txt&#39; needs to be moved to &#39;Dst Directory\\&#39; and overwrite the existing file.txt. The same applies for some folders, moving a folder and merging the contents with the same folder in &#39;dst directory&#39;

I&#39;m currently using shutil.move to move the contents of src to dst but it won&#39;t do it if the files already exist and it won&#39;t merge folders; it&#39;ll just put the folder inside the existing folder.

Update: To make things a bit clearer, what I&#39;m doing is unzipping an archive to the Dst Directory and then moving the contents of Src Directory there and rezipping, effectively updating files in the zip archive. This will be repeated for adding new files or new versions of files etc which is why it needs to overwrite and merge

Solved: I solved my problem by using distutils.dir_util.copy_tree(src, dst), this copies the folders and files from src directory to dst directory and overwrites/merges where neccesary. Hope that helps some people!

Hope that makes sense,
thanks!

Python - Move and overwrite files and folders

I&#39;m trying to use the `cp` command and force an overwrite.

I have tried `cp -rf /foo/* /bar`, but I am still prompted to confirm each overwrite.

How to force cp to overwrite without confirmation

Should we refer to &quot;replacing an implementation&quot; as overwriting or overriding? Is it language-specific?

Overwrite or override

The following code allows me to create a directory if it does not already exist.

    dir = &#39;path_to_my_folder&#39;
    if not os.path.exists(dir):
        os.makedirs(dir)

The folder will be used by a program to write text files into that folder. But I want to start with a brand new, empty folder next time my program opens up. 

Is there a way to overwrite the folder (and create a new one, with the same name) if it already exists?

How to overwrite a folder if it already exists when creating it with makedirs?

I have two classes, `Field` and `Background`. They look a little bit like this:

    class Field( object ):
        def __init__( self, a, b ):
            self.a = a
            self.b = b
            self.field = self.buildField()

        def buildField( self ):
            field = [0,0,0]
            return field
    
    class Background( Field ):
        def __init__( self, a, b, c ):
            super(Background, self).__init__( a, b )
            self.field = self.buildField( c )
      
        def buildField( self, c ):
            field = [c]
            return field

    a, b, c = 0, 1, 2
    background = Background( a, b, c )

This error is pointing to Field&#39;s `buildField()`:

    &quot;TypeError: buildField() takes exactly 2 arguments (1 given).&quot;

I expected Background __init__() to be called first.  To pass &quot;a, b&quot; to Fields __init__(), Field to assign a and b then to assign a list with three 0&#39;s in it to field.  Then for Background&#39;s __init__() to continue, to then call its own buildField() and override self.field with a list containing c.

It seems I don&#39;t fully understand super(), however i was unable to find a solution to my issue after looking at similar inheritance problems on the web and around here.

I expected behavior like c++ where a class can override a method that was inherited.  How can i achieve this or something similar.

Most issues I found related to this were people using double underscores.  My experience with inheritance with super is using the inherited class __init__() to just pass different variables to the super class.  Nothing involving overwriting anything.

Content Type	Original Author	Original Content on Stackoverflow
Question	Mal	View Question on Stackoverflow
Solution 1 - Batch File	Eugene Mayevski 'Callback	View Answer on Stackoverflow
Solution 2 - Batch File	Benoit	View Answer on Stackoverflow
Solution 3 - Batch File	christopher.wr.schill	View Answer on Stackoverflow
Solution 4 - Batch File	Alok	View Answer on Stackoverflow
Solution 5 - Batch File	Kim Mason	View Answer on Stackoverflow
Solution 6 - Batch File	Ruwen	View Answer on Stackoverflow
Solution 7 - Batch File	Raj Nandan Sharma	View Answer on Stackoverflow
Solution 8 - Batch File	abanmitra	View Answer on Stackoverflow
Solution 9 - Batch File	Proggear	View Answer on Stackoverflow
Solution 10 - Batch File	GTodorov	View Answer on Stackoverflow

How to overwrite existing files in batch?

Batch File Problem Overview

Batch File Solutions

Solution 1 - Batch File

Solution 2 - Batch File

Solution 3 - Batch File

Solution 4 - Batch File

Solution 5 - Batch File

Solution 6 - Batch File

Solution 7 - Batch File

Solution 8 - Batch File

Solution 9 - Batch File

Solution 10 - Batch File

Can't escape the backslash with regex?

Checkboxes in web pages – how to make them bigger?

Attributions