You can use Access Control Lists for this. Run

chmod +a "USERID:deny:delete_child" DIRECTORY

to prevent the user USERID from deleting anything from the directory. To undo, run

chmod -a "USERID:deny:delete_child" DIRECTORY

PS: If you want to have it applied to subfolders beneath DIRECTORY as well, use

"USERID:deny:delete_child,directory_inherit"

You can use Access Control Lists for this. Run

chmod +a "USERID:deny:delete_child" DIRECTORY

to prevent the user USERID from deleting anything from the directory. To undo, run

chmod -a "USERID:deny:delete_child" DIRECTORY

PS: If you want to have it applied to current and future subfolders beneath DIRECTORY as well, use

"USERID:deny:delete_child,directory_inherit"

You can use Access Control Lists for this. Run

chmod +a "USERID:deny:delete_child" DIRECTORY

to prevent the user USERID from deleting anything from the directory. To undo, run

chmod -a "USERID:deny:delete_child" DIRECTORY

You can use Access Control Lists for this. Run

chmod +a "USERID:deny:delete_child" DIRECTORY

to prevent the user USERID from deleting anything from the directory. To undo, run

chmod -a "USERID:deny:delete_child" DIRECTORY

PS: If you want to have it applied to subfolders beneath DIRECTORY as well, use

"USERID:deny:delete_child,directory_inherit"