How can I convert from uppercase to lowercase all directories and sub-directories in Ubuntu 16.04.2?

Path:

/ DIRECTORY_ROOT /SUB_DIRECTORY 

And convert that to:

/ directory_root /sub_directory 

I tried: rename 'y/A-Z/a-z/' * but it only changes the root directory and not sub directories. I'm new to Ubuntu, thanks for the help!

1 Answer

find /path -depth -exec rename 'y/[A-Z]/[a-z]/' {} ";" 

Here is a simple directory structure:

$ mkdir -p A/B/C/D $ tree . └── A └── B └── C 

and after running rename using find:

$ find /path -depth -exec rename 'y/[A-Z]/[a-z]/' {} ";" $ tree . └── a └── b └── c