How can I Get a list of all files modified , say 3 months ago. I checked thisthis question but I was not able to apply it to my scenario. I am trying this now , it seems to be working , but I know there should be a better way using find.
ls -ltR | grep -v '2011-05' | grep -v '2011-06' | grep -v '2011-07' | grep -v '2011-08