Can you tell the field display weights of all your entities with one command? Or edit a node through the command-line?

drush --yaml entity-type-read node --fields=**/display/**/weight --include-fieldapi
drush entity-update node 12 --json

Watch the video on http://www.youtube.com/watch?v=cVGZzWjdDh8 and get convinced you want to know more of these entity internals.

I never tried to do an core update on the command line. Today I tried it.

Get the latest drupal version

drush dl

Check your download

ls
drupal-6.x

Checkout svn drupal-6-core

svn --username=build2be chechout http(s)://my-svn/drupal-6-core/trunk/

Step into drupal version to update

cd trunk/www

Apply the patch

diff -ru ./ ../../drupal-6.x/ | patch -p0

Is this all?