These apps are so simple that I may make one of them the YDK "hello world" example going forward 
Here's how to manage the host name on an IOS XR device:
nc-create-xr-shellutil-cfg-20-ydk.py - set hostname
nc-delete-xr-shellutil-cfg-20-ydk.py - delete hostname (set default)
nc-read-xr-shellutil-cfg-20-ydk.py - read/print hostname
nc-update-xr-shellutil-cfg-20-ydk.py - update hostname
nc-create-xr-shellutil-cfg-10-ydk.py - create boilerplate
nc-read-xr-shellutil-cfg-10-ydk.py - read boilerplate
nc-update-xr-shellutil-cfg-10-ydk.py - update boilerplate
nc-delete-xr-shellutil-cfg-10-ydk.py - delete boilerplate
cd-encode-xr-shellutil-cfg-20-ydk.py - hostname config
cd-encode-xr-shellutil-cfg-10-ydk.py - encode boilerplate
With these apps, we just about reach 350 apps in the ydk-py-samples repository. Enjoy!
