From what I can gather, the third one looks like you want a verbose recursive removal script...only I am not so sure about the 'find ${f}' part...

Here is the deal (I think)...

The ${files} is weird, cause if you are actually looping through file names, then the 'find ${f}' line isnt going to find much unless your directories are named the same as your files, and even then, it is only going to match within the current directory and if it does that, then the sed is pointless, cause it is intended to strip paths...

So, if the '${files}' actually was intended to be a "loop through directory names", then it makes a little more sense. In this case, each 'find ${f}' line would produce a list of all files in all subdirectories under the directory specified by '${f}' which comes from the list '${files}'. As each line comes out, the first occurrence of that directory name would be printed as its own line and removed from all subsequent echo's...

So basically this script prints out everything under a directory that you "theoretically" want to delete, and asks you whether or not you want to delete every file therein... oh, and it keeps a count... not that that seems to matter, since you do nothing with it.

I had a friend once that aliased a script like this to his "rm -rf" command so that if he stupidly ran an "rm -rf /" he would get some 3 million lines of echoed files, and realize that he was dumb...

Hope this helps.