Windows batch: create timestamp from string

Question

I want to delete any files that are older than a certain, arbitrary date (which date I wish to designate manually in my code).

How can I get the timestamps of the files concerned and compare them with my arbitrary date? I know I can get the timestamps with something like:

for %%f in (./*) do echo %%~tf

...and I can compare strings or numbers with gtr and lss, but I can't very well compare the timestamps as strings (because they'd be compared alphabetically instead of chronologically).

dbenham · Accepted Answer · 2012-03-01 19:55:31Z

1

Use FORFILES with the /D option. (type FORFILES /? from a command prompt for help).

For example, the following will delete all files from the current directory that have not been modified since March 1, 2011:

forfiles /d -3/1/2011 /c "cmd /c if @isdir==FALSE del @file"

It is possible to work with dates returned by %%~tf, but it is a royal pain; especially if you want your solution to work on multiple machines, possibly with different date format settings.

answered Mar 1, 2012 at 19:55

dbenham

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