How to copy to a folder on a Sunday but delete on every other day?

Question

How can I move/copy a file from D:\WindowsImageBackup\ to D:\Included\ if it's a Sunday or delete D:\Included\ if it's any other day?

The scenario is: An automatic backup to a remote server runs once a day. I want a certain file to be backed up only once a week, on a Sunday (it's the Windows image backup). I have excluded the folder where the file lives (D:\WindowsImageBackup).

Why not use a Windows scheduled task for this? It's much easier to schedule, and you can have it run right before the automatic backup is supposed to run. A scheduled task can run at an exact time, and can be easily configured to run only one day (or all other 6 days) extremely easily. This would make it a matter of writing two simple batch files (one to be run on Sunday, the other to run every other day) and scheduling those batch files to be run. — Ken White, Dec 04 '12 at 02:22

score 1 · Accepted Answer · answered Dec 04 '12 at 02:33

You can do it pretty easily:

setlocal enableextensions enabledelayedexpansion
set dow=%date:~0,3%
if "%dow%" equ "Sun" xcopy /y "D:\WindowsImageBackup\*.* "D:\Included\" & goto eof
echo del "D:\Included\*.*" /y
:eof

Note that this works only if your system language is English, as it does a literal comparison of the day part of Date against the value Sun, and of course isn't localized.

Also, see my comment to your question about this perhaps being better for a scheduled task (as errors would stop it and write to the Event Log).

How to copy to a folder on a Sunday but delete on every other day?

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