First turn on recursive globbing
shopt -s globstar
Now we can look in all directories with
**. To unset, you can use
shopt -u globstar (it's off by default, so it will be off when you open a new shell).
In all of the below, remove
echo after testing to actually create the directories.
If the end-of-tree directories are empty, you could test for emptiness and make the directory only if it is detected... something like
for d in **/; do [[ -z "$(ls -Aq "$d")" ]] && echo mkdir "$d"Texture; done
i.e. if the output of
ls -A (hidden files except current and parent dir) -q (printing ? for non-printing characters) is empty, make a directory.
But since the directories contain files, we'd better test that there are no directories
for d in **/; do [[ -z "$(find "$d" -maxdepth 1 -mindepth 1 -type d)" ]] && echo mkdir "$d"Texture; done
mindepth -1 is to stop the current directory being found...
find sees hidden files, so we know those are included. Since any character should pass the test (we only want to check the output is empty), this should be fairly safe...
A more concise way (sorry Greg) (but actually all these methods do something similarly iffy - we can just about get away with using filenames as text since we aren't actually trying to do anything with those files themselves here):
for d in **/; do (ls -Alq "$d" | grep -q '^d') || echo mkdir "$d"Textures; done
here we add the
-l flag for long output, which prints every file in the form
drwxrwxr-x 5 zanna zanna 4096 Sep 27 22:00 Dir1
we then gulp pipe that stuff into
grep to see if any of the lines starts with
d (meaning there's a directory). We don't want
grep to print any of that meaningless unreliable text, so we just check its exit status with
-q to see if it found anything. If it didn't, we make a directory (using the
|| or operator, meaning, do the next command if the last one failed). This should work, actually, even if your filenames contain horrible characters such as newlines, since
ls prints them as
? - every line should start with a letter indicating the file type, so, probably, no kittens will die.