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Editorial Team
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Asked: 2026-06-09T01:00:29+00:00

At the moment I am using: SetOutPath $INSTDIR\folder\subfolder File /r ..\Output\*.* The problem is

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At the moment I am using:

SetOutPath "$INSTDIR\folder\subfolder"
File /r ..\Output\*.*

The problem is when re-installing all files will be overwritten.

Questions:

  1. How do I copy the files from the installer only if they do not already exist in the target directory?

    and

  2. How do I overwrite those files in the target directory that are older then the ones in the installer?

Edit:

I found this macro: http://nsis.sourceforge.net/MoveFileFolder

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1 Answer

  1. Editorial Team

    I think the best solution is to use the SetOverwrite flag:

    http://nsis.sourceforge.net/Docs/Chapter4.html#4.8.2.8

    This flag can be changed on the fly within a section.

    So to answer the question specifically:

    SetOverwrite off       # Only copy if file does not exist
File /r ..\Output\*.*


SetOverwrite ifnewer   # Only overwrite if installers' file is newer
File /r ..\Output\*.*
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