Wondering if there's an easy and/or portable way to say "change to the most recently modified child directory". I can use `ls` and `awk` but there's probably a better way.

```
cd $( ls -ltrd */ | tail -1 | awk '{ print $8 }' )

```

I have to run a command in an "output files" directory with hundreds of subdirectories and 99% of the time I want to go to the most recently changed directory. I don't know what the names of the directories will be in advance.