xcopy和robocopy之间的区别

Question

我是批处理脚本的新手.作为一个新手,我发现在脚本编写时它们都很有用xcopy和robocopy之间的主要区别是什么？

Answer 1

Robocopy在较新版本的Windows中取代了XCopy

1. 使用镜像,XCopy不会
2. 有一个/ RH选项,允许设置复制时间
3. 有一个/ MON:n选项来检查文件中的差异
4. 复制比XCopy更多的文件属性

是的,我同意Mark Setchell,他们都是废话.(由微软带给你)

更新:

XCopy返回码:

0 - Files were copied without error.
1 - No files were found to copy.
2 - The user pressed CTRL+C to terminate xcopy. enough memory or disk space, or you entered an invalid drive name or invalid syntax on the command line.
5 - Disk write error occurred.

Robocopy返回代码:

0 - No errors occurred, and no copying was done. The source and destination directory trees are completely synchronized.
1 - One or more files were copied successfully (that is, new files have arrived).
2 - Some Extra files or directories were detected. No files were copied Examine the output log for details. 
3 - (2+1) Some files were copied. Additional files were present. No failure was encountered.
4 - Some Mismatched files or directories were detected. Examine the output log. Some housekeeping may be needed.
5 - (4+1) Some files were copied. Some files were mismatched. No failure was encountered.
6 - (4+2) Additional files and mismatched files exist. No files were copied and no failures were encountered. This means that the files already exist in the destination directory
7 - (4+1+2) Files were copied, a file mismatch was present, and additional files were present.
8 - Some files or directories could not be copied (copy errors occurred and the retry limit was exceeded). Check these errors further.
16 - Serious error. Robocopy did not copy any files. Either a usage error or an error due to insufficient access privileges on the source or destination directories.

有关Robocopy返回值的更多详细信息,请访问:http://ss64.com/nt/robocopy-exit.html

Answer 2

最重要的区别在于robocopy(通常)在发生错误时重试,而xcopy不会.在大多数情况下,这robocopy更适合在脚本中使用.

附录:为了完整性,robocopy存在一个已知的边缘案例问题; 它可能无法复制名称包含无效UTF-16序列的文件或目录. 如果这对您来说是个问题,您可能需要查看第三方工具,或编写自己的工具.

Answer 3

我可以看到的区别是Robocopy有很多选择，但是除非我做特别的事情，否则我发现其中没有什么特别有用。

我对几个复制例程进行了一些基准测试，发现XCOPY和ROBOCOPY是最快的，但是令我惊讶的是，XCOPY始终领先于Robocopy。

具有讽刺意味的是，robocopy重试失败的副本，但是在我的基准测试中，它也失败了很多，而xcopy却没有。

在基准测试后，我做了完整文件（逐字节）比较。

这是我在测试中与robocopy一起使用的开关：

 **"/E /R:1 /W:1 /NP /NFL /NDL"**.  

如果有人知道更快的组合方式（除了需要删除/ E之外），我很想听听。

robocopy的另一个有趣/令人失望的事情是，如果副本确实失败，则默认情况下它将重试1,000,000次，每次尝试之间的间隔为30秒。如果您正在运行一个无人值守的长批处理文件，则在几个小时后再次回来发现它仍在尝试复制特定文件时，您可能会非常失望。

使用/ R和/ W开关可以更改此行为。

• 使用/ R，您可以告诉它重试多少次，
• / W让您指定重试之前的等待时间。

如果可以在此处附加文件，我可以共享结果。

• 我的测试都是在同一台计算机上完成的，
• 将文件从一个外部驱动器复制到另一个外部驱动器，
• 都在USB 3.0端口上。

我还在测试中包括了FastCopy和Windows Copy，每个测试运行了10次。请注意，差异非常明显。95％的置信区间没有重叠。