Para listar todos os arquivos que foram modificados entre 2009 e 2011, use find
com -newermt
:
find . -type f -newermt '01 jan 2009 00:00:00' -not -newermt '01 jan 2012 00:00:00' -ls
Para remover:
find . -type f -newermt '01 jan 2009 00:00:00' -not -newermt '01 jan 2012 00:00:00' -delete