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Wednesday, February 1, 2012

Microsoft DOS xcopy command

About xcopy
Xcopy is a powerful version of the copy command with additional features; has the capability of moving files, directories, and even whole drives from one location to another.

Availability
The xcopy command is an external command that is available in the below Microsoft operating systems
Tip Users running more recent versions of Windows should also consider using robocopy.

Syntax
Windows 2000 and XP xcopy syntax
XCOPY source [destination] [/A | /M] [/D[:date]] [/P] [/S [/E]] [/V] [/W] [/C] [/I] [/Q] [/F] [/L] [/H] [/R] [/T] [/U]
[/K] [/N] [/O] [/X] [/Y] [/-Y] [/Z] [/EXCLUDE:file1[+file2][+file3]...]
sourceSpecifies the file(s) to copy.
destinationSpecifies the location or name of new files.
/ACopies only files with the archive attribute set, doesn't change the attribute.
/MCopies only files with the archive attribute set, turns off the archive attribute.
/D:m-d-yCopies files changed on or after the specified date. If no date is given, copies only those files whose source time is newer than the destination time.
/EXCLUDE:file1 [+file2][+file3]...Specifies a list of files containing strings. When any of the strings match any part of the absolute path of the file to be copied, that file will be excluded from being copied. For example, specifying a string like \obj\ or .obj will exclude all files underneath the directory obj or all files with the .obj extension respectively.
/PPrompts you before creating each destination file.
/SCopies directories and subdirectories except empty ones.
/ECopies directories and subdirectories, including empty ones. Same as /S /E. May be used to modify /T.
/VVerifies each new file.
/WPrompts you to press a key before copying.
/CContinues copying even if errors occur.
/IIf destination does not exist and copying more than one file, assumes that destination must be a directory.
/QDoes not display file names while copying.
/FDisplays full source and destination file names while copying.
/LDisplays files that would be copied.
/HCopies hidden and system files also.
/ROverwrites read-only files.
/TCreates directory structure, but does not copy files. Does not include empty directories or subdirectories. /T /E includes empty directories and subdirectories.
/UCopies only files that already exist in destination.
/KCopies attributes. Normal Xcopy will reset read-only attributes.
/NCopies using the generated short names.
/OCopies file ownership and ACL information.
/XCopies file audit settings (implies /O).
/YSuppresses prompting to confirm you want to overwrite an existing destination file.
/-YCauses prompting to confirm you want to overwrite an existing destination file.
/ZCopies networked files in restartable mode.
The switch /Y may be preset in the COPYCMD environment variable.
This may be overridden with /-Y on the command line.

Windows 98 and older xcopy syntax
Copies files and directory trees.
XCOPY source [destination] [/A | /M] [/D[:date]] [/P] [/S [/E]] [/W] [/C] [/I] [/Q] [/F] [/L] [/H] [/R] [/T] [/U] [/K] [/N]
sourceSpecifies the file(s) to copy.
destinationSpecifies the location or name of new files.
/ACopies files with the archive attribute set, doesn't change the attribute.
/MCopies files with the archive attribute set, turns off the archive attribute.
/D:dateCopies files changed on or after the specified date. If no date is given, copies only those files whose source time is newer than the destination time.
/PPrompts you before creating each destination file.
/SCopies directories and sub directories except empty ones.
/ECopies directories and sub directories, including empty ones. Same as /S /E. May be used to modify /T.
/WPrompts you to press a key before copying.
/CContinues copying even if errors occur.
/IIf destination does not exist and copying more than one file, assumes that destination must be a directory.
/QDoes not display file names while copying.
/FDisplays full source and destination file names while copying.
/LDisplays files that would be copied.
/HCopies hidden and system files also.
/ROverwrites read-only files.
/TCreates directory structure, but does not copy files. Does not include empty directories or sub directories. /T /E includes empty directories and sub directories.
/UUpdates the files that already exist in destination.
/KCopies attributes. Normal xcopy will reset read-only attributes.
/YOverwrites existing files without prompting.
/-YPrompts you before overwriting existing files.
/NCopy using the generated short names.
Examples
xcopy c:\temp /e
The above example is the basic xcopy command to copy the files, directories, and subdirectories to the directory you're currently in.
xcopy "c:\documents and settings\hope" /e
In the above example the xcopy command would copy all files and directories in the user "hope" directory to the directory or drive you're currently in.
xcopy h:\*.* /a /e /k
The above command would copy everything located on the H drive to the drive you are currently on.
Additional examples and information about how to copy directories in MS-DOS and other operating systems including Windows can also be found on document CH000838.

Questions and answers
Getting Invalid number of parameters error
This error occurs when you're typing a directory in the MS-DOS or the Windows command line that has spaces in it. For example using the xcopy command to copy files in theDocuments and Settings folder. When typing a directory with spaces in MS-DOS make sure to surround the path with quotes. For example, instead of typing: c:\documents and settings type "c:\documents and settings".

Cannot perform a cyclic copy
This error occurs when you're trying to copy all directories and files and that directory also contains the directory you're copying all the files to. If this command were to be allowed it would get into a loop and would never stop copying the same files over and over. When using the xcopy command if you're copying all subdirectories you must copy those files and folders to a completely separate directory or drive.

Parse error
This error occurs when the command you're typing in has invalid syntax. For example, if you're surrounding your path in quotes and leave out the ending quotes.

I attempted to use the above xcopy command and was not able to copy all files within my favorites folder.
After further examination, Computer Hope also encountered this issue. However, was able to copy the majority of all favorites by using the below command.

xcopy c:\windows\favorites\*.* /e /k /i /c
We are under the impression that this issue is generated because of the way that Internet Explorer saves the URL (favorite) using long file names as well as extended characters. 
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Somewhere, Selangor, Malaysia
An IT by profession, a beginner in photography

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