Merge and lowercase Directories and FIles

Question

I have a directory like this

root/A/b/SomeFile.jpg
root/A/B/OtherFIle.jpg
root/a/D/yet_again.jpg

And I would like this

root/a/b/somefile.jpg
root/a/b/otherfile.jpg
root/a/d/yet_again.jpg

OR

other_root/a/b ...

I'm happy with assuming that there aren't collisions.

How could I do this in a bash or python script (or something prebuilt to sort files and directories)?

I'd do by hand, but there are thousands of them.

Answer 1

Obligatory zsh solution:

for x in root/**/*(On); do mv -i $x ${x:h}/${x:t:l}; done

This will ask for confirmation in case of a collision.

Explanation: ** means all (sub)*directories, recursively. (On) sorts in decreasing lexicographic order, so that directories always turn up after their contents. ${x:h} means the directory name part of $x, ${x:t} means its base name, and the :l converts to lowercase.

Bash 4 might be able to do it, since it has **, but I don't know if it has an equivalent of (On).

Answer 2

Here is a very specific, non-general way to solve this problem, which I'd call 'brute force' at best.

import os
import re
import shutil

path = os.getcwd()
newpath = os.path.join(path,'..','newpics')
for item in os.listdir(path):
    path1 = os.path.join(path,item)
    if os.path.isdir(path1):
        for item_2 in os.listdir(path1):
            path2 = os.path.join(path1,item_2)
            for item_3 in os.listdir(path2):
                path3 = os.path.join(path2,item_3)
                item_lc = item.lower()
                item_2lc = item_2.lower()
                item_3lc = item_3.lower()
                pic_path = os.path.join(newpath,item_lc,item_2lc,item_3lc)
                print os.path.join(path,item,item_2,item_3)
                print pic_path
                try:
                    os.makedirs(os.path.join(newpath,item_lc,item_2lc))
                except OSError:
                    pass
                shutil.copyfile(path3,pic_path)