Recursive move utility on Unix?
Per the mv(1) manpage from gnu's mv:
-u, --update
move only when the SOURCE file is newer than the destination
file or when the destination file is missing
the proposed mv -uf dir1/* dir2/ move the (sub)directories, not each file. you might try to use find
cd dir1
find . -type d -exec mkdir -p dir2/"{}" \;
find . -type f -exec mv -uf "{}" dir2/"{}" \;
or something similar
Does not
mv -uf tree1/* tree2/
work?