macOS Generating nested folders with terminal

If you use the mkdir command with the -p option, it will create intermediate folders. For example mkdir -p ~/temp01/temp02/temp03 will create a temp03 folder inside a temp02 folder inside a temp01 folder inside your home folder.

EDIT: oops, forgot the flag in my example...fixed.

As far as I know there is no limit on the number of directories that can be nested. However, the longest an absolute path can be is 1024 characters (or whatever the value of PATH_MAX is). You'll probably start getting "file name too long" errors somewhere around the high hundreds of nested directories, depending on the lengths of their names.

And yes, mkdir -p is the answer. Manpages are your friend.

I found an older thread that I helped with that dealt with creating directories and sub-directories. Read through the entire thread. It involves writing a short bash script to do the job.