[support] Drush site-upgrade

[A-NO-NE Music]

I am trying to understand how Drush site-upgrade works.  The help isn't too clear to me, and all the info I found on the net hasn't been helpful.

When I run $drush site-update @self on my local dev (MAMP Pro/OSX10.6.3) to attempt upgrading Drupal 6.16 to 6.19, I get:
=======
Do you really want to continue? (y/n): y
sh: mysqldump: command not found
sh: mysql: command not found
sh: mysql: command not found
No database updates required 	[success]
'all' cache was cleared 			[success]
Finished performing updates.  
=======

pm update works wonder.  That was easy, but this one, I have been scratching my head for 3 hours now.  Any help would be appreciated.


--
- Hiro

Hiroaki Honshuku, A-NO-NE Music, Greater Boston
http://a-no-ne.com   http://anonemusic.com