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Is it possible to only merge/move/copy the larger file when merging two directories of the same name in Windows 7?

confirmation dialog

My specific scenario is merging two music libraries from old machines onto a new one. THe old libraries may have been ripped at a lower bitrate, and so I always want the larger of the two files to be kept when given a choice.

Right now, I'm stuck pressing "No" on every one

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Are the lower bit rate files always older? If the two machines you're moving them from are 'old' machines. If so you could write a script that does not overwrite newer files (by datestamp) with older ones for example using Xcopy with the /D switch set – Joe Taylor Sep 17 '11 at 15:13
@Joe Taylor - not alwaysold: but they are always smaller! – warren Sep 17 '11 at 16:12
You are gonna have to batch file this one buddy. – surfasb Sep 17 '11 at 16:54
@surfasb - could you suggest a batch file way of doing it? – warren Sep 22 '11 at 13:42
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If not a batchfile, tryin xxcopy.

2.3.3 by File Size

You may use the relative file size as the file selection criteria. The switches listed below are mutually exclusive.

/BZ Same as /BZX /BZE Backs up equal-size files (includes brand new files). /BZL Backs up larger-size files (includes brand new files). /BZS Backs up smaller-size files (includes brand new files). /BZX Backs up different-size files (includes brand new files).

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what would the batch/powershell route look like? – warren Nov 11 '11 at 2:35
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