mercurial

1.hgk 

2.hg diff -c REV //compare with its first parent

3.hg paths

4.hg diff >1.patch

5.hg import 1.patch -f(force) --no-commit

6.hg revert -r 100 -all //only revert the files

 hg update --clean //clean changes

7.hg update 100 // hg parent can see the difference

8.hg rollback// rollback a transactional operation(default 1)

9.hg add // hg forget

10.hg incoming