files modified in 2011, list them
find . -maxdepth 1 -newermt 20110101 -not -newermt 20120101 -type f -exec ls -lt “{}” ;
files modified in 2011, move them
find . -maxdepth 1 -newermt 20110101 -not -newermt 20120101 -type f -exec mv “{}” move-to-folder/ ;