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批处理文件未获取拖放文件名的前 5 个字符

tag-icon • tag-icon windows command-line batch-file xcopy
批处理文件未获取拖放文件名的前 5 个字符

我创建了一个简单的批处理文件，用于将 drop 文件复制到特定文件夹中。这是我的批处理脚本：

rem This will create a BACK-UP DATA Folder in Desktop
rem with a SUB-FOLDER which filename must be the first 5 characters of drop file filename
rem with another folder filename: "COPY" inside (just for another back up)
for %%f in (%1) do (
    set oldName=%%~nf
    set newName=%oldName:~0,5%
    mkdir %HOMEPATH%\Desktop\"BACK-UP DATA"\"%newName%"\
    mkdir %HOMEPATH%\Desktop\"BACK-UP DATA"\"%newName%"\COPY 
    xcopy %%f "%HOMEPATH%\Desktop\BACK-UP DATA\%newName%"
    rem will copy drop file also inside COPY folder
    xcopy %%f "%HOMEPATH%\Desktop\BACK-UP DATA\%newName%\COPY"
    rem open created folder
    start "" "%HOMEPATH%\Desktop\BACK-UP DATA\%newName%\"
    PAUSE
)

这是命令提示符中的输出...

set oldName="New Text Document"
 set newName=~0,5
  mkdir C:\User\username\Desktop\"BACK-UP DATA"\""\
  mkdir C:\User\username\Desktop\"BACK-UP DATA"\""\COPY
  xcopy "C:\User\username\Desktop\New Text Document.txt" "C:\User\username\Desktop\BACK-UP DATA\"
  xcopy "C:\User\username\Desktop\New Text Document.txt" "C:\User\username\Desktop\BACK-UP DATA\\COPY"
  start "" "C:\User\username\Desktop\BACK-UP DATA\\"
  pause

变量为什么%newName%不起作用？我的脚本出了什么问题？

答案1

如果你想声明变量并在 for 循环或 if 中使用相同的变量，你必须使用延缓扩张前任：

SetLocal EnableDelayedExpansion

你也必须%用以下方法替代!

set "oldName=%%~nf"
set "newName=!oldName:~0,5!"
mkdir "%HOMEPATH%\Desktop\BACK-UP DATA\!newName!\COPY"

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