如何使用批处理脚本将源位置中修改的文件和新添加的文件复制到目标位置？目标中已经存在的现有文件不应再次复制，只能复制新添加的文件和修改的文件。请帮忙。
答案1
根据修改日期以及源中新添加的文件使用批处理脚本从一个位置复制到另一个位置
好的，所以您在 Windows 中使用批处理和命令XCOPY。您应该可以使用本机 WindowsRobocopy命令而不是，这是一种比使用循环和日期时间戳替换检查等的XCOPY批处理脚本更强大的完成任务的方法。这也是可能的，但有一些陷阱，但它比使用简单和更清晰的方法更复杂一些FORXCOPYWindows 本机 ROBOCOPY来自批处理脚本或命令行的命令。
如果你正在构建新的东西，最好使用Robocopy而不是，XCOPY因为这XCOPY是一个弃用的命令，我相信它打算由 Robocopy 取代，特别是根据 Microsoft 的 Windows Vista（以及更新的操作系统）。
根据你的问题做出的假设
我在这里要做的假设是，您尝试使用一些XCOPY命令但无法使其满足您的需要，所以我假设您已经完成了这项工作并现在寻求帮助，但如果您有任何尝试过（但没有起作用）的例子，请继续更新您的问题以满足其他人的关注。
我不是在重复做事，而是根据您的问题和对您披露内容的良好判断提出合理的建议。您仍然需要做一些工作，阅读语法Robocopy，插入变量和/或其他选项和开关，并在您这边进行一些测试，确认一切按预期工作，以防您需要进一步调整。
Robocopy 脚本
（看脚本说明下面是我在本例中使用的选项，同时还要确保将 sourcedir 和 targetdir 变量路径更改为需要设置的位置。在用于生产目的之前，请务必从测试位置进行测试，以确保彻底并确认自己。）
@ECHO ON
SETLOCAL
SET SourceDir=C:\SourcePath
SET TargetDir=C:\TargetPath
SET LogFile=C:\LogPath\Logfile.txt
ROBOCOPY "%SourceDir%" "%TargetDir%" *.* /PURGE /S /NP /R:5 /LOG+:%LogFile% /TS /FP
GOTO EOF
脚本说明
我在我的示例中使用了这些选项，但请参见下文如何查看所有选项以进一步满足您的特定需求。
/S :: copy Subdirectories, but not empty ones.
/PURGE :: delete dest files/dirs that no longer exist in source.
/NP :: No Progress - don't display % copied.
/R:n :: number of Retries on failed copies: default 1 million.
/LOG+:file :: output status to LOG file (append to existing log).
/TS :: include source file Time Stamps in the output.
/FP :: include Full Pathname of files in the output.
更多资源
在 Windows 的命令行中输入Robocopy /?然后按Enter
C:\Users\User>robocopy /?
-------------------------------------------------------------------------------
ROBOCOPY :: Robust File Copy for Windows
-------------------------------------------------------------------------------
Started : Fri Dec 18 02:29:48 2015
Usage :: ROBOCOPY source destination [file [file]...] [options]
source :: Source Directory (drive:\path or \\server\share\path).
destination :: Destination Dir (drive:\path or \\server\share\path).
file :: File(s) to copy (names/wildcards: default is "*.*").
::
:: Copy options :
::
/S :: copy Subdirectories, but not empty ones.
/E :: copy subdirectories, including Empty ones.
/LEV:n :: only copy the top n LEVels of the source directory tree.
/Z :: copy files in restartable mode.
/B :: copy files in Backup mode.
/ZB :: use restartable mode; if access denied use Backup mode.
/EFSRAW :: copy all encrypted files in EFS RAW mode.
/COPY:copyflag[s] :: what to COPY for files (default is /COPY:DAT).
(copyflags : D=Data, A=Attributes, T=Timestamps).
(S=Security=NTFS ACLs, O=Owner info, U=aUditing info).
/DCOPY:T :: COPY Directory Timestamps.
/SEC :: copy files with SECurity (equivalent to /COPY:DATS).
/COPYALL :: COPY ALL file info (equivalent to /COPY:DATSOU).
/NOCOPY :: COPY NO file info (useful with /PURGE).
/SECFIX :: FIX file SECurity on all files, even skipped files.
/TIMFIX :: FIX file TIMes on all files, even skipped files.
/PURGE :: delete dest files/dirs that no longer exist in source.
/MIR :: MIRror a directory tree (equivalent to /E plus /PURGE).
/MOV :: MOVe files (delete from source after copying).
/MOVE :: MOVE files AND dirs (delete from source after copying).
/A+:[RASHCNET] :: add the given Attributes to copied files.
/A-:[RASHCNET] :: remove the given Attributes from copied files.
/CREATE :: CREATE directory tree and zero-length files only.
/FAT :: create destination files using 8.3 FAT file names only.
/256 :: turn off very long path (> 256 characters) support.
/MON:n :: MONitor source; run again when more than n changes seen.
/MOT:m :: MOnitor source; run again in m minutes Time, if changed.
/RH:hhmm-hhmm :: Run Hours - times when new copies may be started.
/PF :: check run hours on a Per File (not per pass) basis.
/IPG:n :: Inter-Packet Gap (ms), to free bandwidth on slow lines.
/SL:: copy symbolic links versus the target.
::
:: File Selection Options :
::
/A :: copy only files with the Archive attribute set.
/M :: copy only files with the Archive attribute and reset it.
/IA:[RASHCNETO] :: Include only files with any of the given Attributes set.
/XA:[RASHCNETO] :: eXclude files with any of the given Attributes set.
/XF file [file]... :: eXclude Files matching given names/paths/wildcards.
/XD dirs [dirs]... :: eXclude Directories matching given names/paths.
/XC :: eXclude Changed files.
/XN :: eXclude Newer files.
/XO :: eXclude Older files.
/XX :: eXclude eXtra files and directories.
/XL :: eXclude Lonely files and directories.
/IS :: Include Same files.
/IT :: Include Tweaked files.
/MAX:n :: MAXimum file size - exclude files bigger than n bytes.
/MIN:n :: MINimum file size - exclude files smaller than n bytes.
/MAXAGE:n :: MAXimum file AGE - exclude files older than n days/date.
/MINAGE:n :: MINimum file AGE - exclude files newer than n days/date.
/MAXLAD:n :: MAXimum Last Access Date - exclude files unused since n.
/MINLAD:n :: MINimum Last Access Date - exclude files used since n.
(If n < 1900 then n = n days, else n = YYYYMMDD date).
/XJ :: eXclude Junction points. (normally included by default).
/FFT :: assume FAT File Times (2-second granularity).
/DST :: compensate for one-hour DST time differences.
/XJD :: eXclude Junction points for Directories.
/XJF :: eXclude Junction points for Files.
::
:: Retry Options :
::
/R:n :: number of Retries on failed copies: default 1 million.
/W:n :: Wait time between retries: default is 30 seconds.
/REG :: Save /R:n and /W:n in the Registry as default settings.
/TBD :: wait for sharenames To Be Defined (retry error 67).
::
:: Logging Options :
::
/L :: List only - don't copy, timestamp or delete any files.
/X :: report all eXtra files, not just those selected.
/V :: produce Verbose output, showing skipped files.
/TS :: include source file Time Stamps in the output.
/FP :: include Full Pathname of files in the output.
/BYTES :: Print sizes as bytes.
/NS :: No Size - don't log file sizes.
/NC :: No Class - don't log file classes.
/NFL :: No File List - don't log file names.
/NDL :: No Directory List - don't log directory names.
/NP :: No Progress - don't display % copied.
/ETA :: show Estimated Time of Arrival of copied files.
/LOG:file :: output status to LOG file (overwrite existing log).
/LOG+:file :: output status to LOG file (append to existing log).
/UNILOG:file :: output status to LOG file as UNICODE (overwrite existing
log).
/UNILOG+:file :: output status to LOG file as UNICODE (append to existing
log).
/TEE :: output to console window, as well as the log file.
/NJH :: No Job Header.
/NJS :: No Job Summary.
/UNICODE :: output status as UNICODE.
::
:: Job Options :
::
/JOB:jobname :: take parameters from the named JOB file.
/SAVE:jobname :: SAVE parameters to the named job file
/QUIT :: QUIT after processing command line (to view parameters).
/NOSD :: NO Source Directory is specified.
/NODD :: NO Destination Directory is specified.
/IF :: Include the following Files.
答案2
这是复制文件的脚本。如果目标文件夹中已经有文件，
xcopy 总是提示您使用 y/n/All 选项覆盖文件。
为了避免这种情况，我们可以使用 echo 命令。
@echo off
rem copy only files which not available at destionation folder (in your case)
echo n|xcopy /e /v "Source Folder" "Destionation Here"
rem copy and overwrites All files
echo All|xcopy /e /v "Source Folder" "Destionation Here"
rem copy and overwrites All files
echo y|xcopy /e /v "Source Folder" "Destionation Here"
pause
exit