Go to bottom most directory? - linux

Question

I'm working with a directory with a lot of nested folders like /path/to/project/users/me/tutorial
I found a neat way to navigate up the folders here:
https://superuser.com/questions/449687/using-cd-to-go-up-multiple-directory-levels
But I'm wondering how to go down them. This seems significantly more difficult, but a couple things about the directory structure help. Each directory only has another directory in it, or maybe a directory and a README.
The directory I'm looking for looks more like a traditional project and might have random directories and files in it (more than any of the other higher directories certainly).
Right now I'm working on a solution using uh.. recursive bash functions cd'ing into the only directory underneath until there are either 0 or 2+ directories to loop through. This doesn't work yet..
Am I overcomplicating this? I feel like there could be some sweet solution using find. Ideally I want to be able to type something like:
down path
where path is a top-level folder. And that will take me down to the bottom folder tutorial.

Answer 1

There is an environment variable named CDPATH. This variable is used by cd in the same manner that executables use PATH when searching for pathname.
For example, if you have the following directories:
/path/to/project/users/me
/path/to/project/users/me/tutorial
/path/to/project/users/him
/path/to/project/users/him/test
/path/to/project/users/her
/path/to/project/users/her/uat
/path/to/project/users/her/dev
/path/to/application
/path/to/application/conf
/path/to/application/bin
/path/to/application/share
export CDPATH=/path/to/project/users/me:/path/to/project/users/him:/path/to/project/users/her:/path/to/application
A simple command such as cd tutorial will search the above paths for tutorial.
Let's pretend /path/to/application has directories underneath namely, conf, bin, share. A simple cd conf will send you to /path/to/application/conf as long as none of the paths before it have conf directory. This behavior is similar to executables in PATH. The first occurrence always gets chosen

Answer 2

My attempt - this actually works now! I'm still afraid it could easily go infinite with symbolic links or some such.
Also, I have to run this like
. down
from within the first empty folder.
#!/bin/bash
function GoDownOnce {
Dirs=$(find ./ -maxdepth 1 -mindepth 1 -type d)
NumDirs=$(echo $Dirs | wc -w)
echo $Dirs
echo $NumDirs
if [ "$NumDirs" = "1" ]; then
cd $Dirs
GoDownOnce
fi
}
GoDownOnce

Answer 3

A friend also suggested this sweet one liner:
cd $(find . -type d -name tutorial)
Admittedly this isn't quite what I asked, but it gets the job done pretty well.