How to remove the difference between two directories?

Question

linux

There are 2 directories: dir1 and dir2. How can I recursively remove all subdirectories and files from dir2 that are not in dir1 ?

Answer 1

Maybe rsync will help?

rsync \
  -av \
  --delete \
  --existing \
  dir1 dir2

Answer 2

diff -r dir1/ dir2/ |grep Only | sed -e 's/^.*Only in //' -e '[email protected]: @/@' | xargs rm
Upd: but Sergey Sokolov 's answer is certainly prettier

Answer 3

dir1=/path/to/dir1 dir2=/path/to/dir2; cd $dir2; for i in $(find . -mindepth 1 -type d -or -type f | tac); do if ; then if ; then rm -f $i; elif ; then rmdir $i; fi; fi; done