Useful directory merging commands.

mergablerga.sh

# METHOD 1:
# use this when there's a reasonable number of subdirectories
mv dir1/* dir2/* dir3/* ... DESTINATION

# Then if there are conflicts...
cp -Rn dir2/* DESTINATION
cp -Rn dir3/* DESTINATION

#METHOD 2:
# use this when there are too many subdirectories for mv to handle as args at once
for dir in ./*; do mv "$dir" DESTINATION; done
# --remove-source-files is technically optional, and could slow down the process; omit if disk space is not a constraint
for dir in ./*; do rsync -avhP --remove-source-files "$dir" DESTINATION; done