I have just spent a few hours getting familiar with this cool tool. Drush allows most housekeeping for Drupal sites to be done from a command line - it's a wonderful thing. Just take a look at how much I got done executing this single command:
sudo drush @veo up
And here's what it did for me:
donmc@jbt:/var/www/VEOffice$ sudo drush @veo up Update information last refreshed: Sat, 04/28/2012 - 16:25 Update status information on all installed and enabled Drupal projects: Name Installed version Proposed Status version AddThis (addthis) 7.x-2.1-beta1 7.x-2.1-beta1 Up to date Apps (apps) 7.x-1.0-beta5 7.x-1.0-beta6 Update available Backup and Migrate (backup_migrate) 7.x-2.2 7.x-2.2 Up to date Backup and Migrate Files (backup_migrate_files) 7.x-1.x-dev 7.x-1.x-dev Up to date Drupal 7.12 7.12 Up to date Boxes (boxes) 7.x-1.0-beta6 7.x-1.0-beta8 Update available CAPTCHA (captcha) 7.x-1.0-alpha3 7.x-1.0-beta2 Update available Colorbox (colorbox) 7.x-1.2 7.x-1.3 Update available OpenPublic (openpublic) 7.x-1.0-beta8 7.x-1.0-beta8 Up to date Comment notify (comment_notify) 7.x-1.0 7.x-1.0 Up to date Conditional Stylesheets (conditional_styles) 7.x-2.0 7.x-2.1 Update available Context (context) 7.x-3.0-beta2 7.x-3.0-beta2 Up to date Context Bool Field (context_bool_field) 7.x-1.0-beta1 7.x-1.0-beta1 Up to date Context Breadcrumb Current Page 7.x-1.0-beta2 7.x-1.0-beta2 Up to date (context_breadcrumb_current_page) Context Field (context_field) 7.x-1.0-beta2+10-dev 7.x-1.0-beta3 Update available Chaos tools (ctools) 7.x-1.0-rc1 7.x-1.0 SECURITY UPDATE available Date (date) 7.x-2.0-alpha4 7.x-2.5 Update available Default Content (defaultcontent) 7.x-1.0-alpha4 7.x-1.0-alpha6 Update available Delta API (delta) 7.x-3.0-beta8 7.x-3.0-beta9 Update available Diff (diff) 7.x-2.0 7.x-2.0 Up to date Entity API (entity) 7.x-1.0-beta10 7.x-1.0-rc2 Update available Entity Autocomplete (entity_autocomplete) 7.x-1.0-beta1 7.x-1.0-beta1 Up to date Entity cache (entitycache) 7.x-1.1 7.x-1.1 Up to date Features (features) 7.x-1.0-beta4 7.x-1.0-rc2 Update available Fieldgroup (field_group) 7.x-1.1 7.x-1.1 Up to date Follow (follow) 7.x-1.0-alpha1+0-dev 7.x-1.0-alpha1 Up to date google_analytics 7.x-1.2 7.x-1.2 Up to date IMCE (imce) 7.x-1.5 7.x-1.5 Up to date IMCE Wysiwyg API bridge (imce_wysiwyg) 7.x-1.0 7.x-1.0 Up to date Link (link) 7.x-1.0-beta1 7.x-1.0 Update available References (references) 7.x-2.0-beta3 7.x-2.0 Update available Node Reference View Formatter 7.x-1.0-beta2 7.x-1.0-beta3 Update available (node_reference_view_formatter) Nodeblock (nodeblock) 7.x-1.2 7.x-1.2 Up to date Node Connect (nodeconnect) 7.x-1.0-alpha1 7.x-1.0-alpha2 Update available Nodequeue (nodequeue) 7.x-2.0-alpha1 7.x-2.0-beta1 Update available Panels (panels) 7.x-3.0 7.x-3.2 Update available Password policy (password_policy) 7.x-1.0-rc1 7.x-1.0-rc2 Update available Pathauto (pathauto) 7.x-1.0-rc2 7.x-1.0 Update available reCAPTCHA (recaptcha) 7.x-1.7 7.x-1.7 Up to date Secure Pages (securepages) 7.x-1.x-dev Installed version not supported Strongarm (strongarm) 7.x-2.0-beta4 7.x-2.0-rc1 Update available Token (token) 7.x-1.0-beta6 7.x-1.0 Update available Twitter Pull (twitter_pull) 7.x-1.0-rc1 7.x-1.0-rc1 Up to date Views (views) 7.x-3.0-rc1 7.x-3.3 SECURITY UPDATE available Views Boxes (views_boxes) 7.x-1.0-beta6 7.x-1.0-beta8 Update available Webform (webform) 7.x-3.13 7.x-3.17 SECURITY UPDATE available Wysiwyg (wysiwyg) 7.x-2.1 7.x-2.1 Up to date XML sitemap (xmlsitemap) 7.x-2.0-beta3 7.x-2.0-rc1 Update available Omega (omega) 7.x-3.0 7.x-3.1 Update available Rubik (rubik) 7.x-4.0-beta8 7.x-4.0-beta8 Up to date Tao (tao) 7.x-3.0-beta4 7.x-3.0-beta4 Up to date Security and code updates will be made to the following projects: Apps [apps-7.x-1.0-beta6], Boxes [boxes-7.x-1.0-beta8], CAPTCHA [captcha-7.x-1.0-beta2], Colorbox [colorbox-7.x-1.3], Conditional Stylesheets [conditional_styles-7.x-2.1], Context Field [context_field-7.x-1.0-beta3], Chaos tool suite (ctools) [ctools-7.x-1.0], Date [date-7.x-2.5], Default Content [defaultcontent-7.x-1.0-alpha6], Delta [delta-7.x-3.0-beta9], Entity API [entity-7.x-1.0-rc2], Features [features-7.x-1.0-rc2], Link [link-7.x-1.0], References [references-7.x-2.0], Node Reference View Formatter [node_reference_view_formatter-7.x-1.0-beta3], Node Connect [nodeconnect-7.x-1.0-alpha2], Nodequeue [nodequeue-7.x-2.0-beta1], Panels [panels-7.x-3.2], Password policy [password_policy-7.x-1.0-rc2], Pathauto [pathauto-7.x-1.0], Secure Pages [securepages-7.x-1.x-dev], Strongarm [strongarm-7.x-2.0-rc1], Token [token-7.x-1.0], Views [views-7.x-3.3], Views Boxes [views_boxes-7.x-1.0-beta8], Webform [webform-7.x-3.17], XML sitemap [xmlsitemap-7.x-2.0-rc1], Omega - Responsive HTML5 Base Theme [omega-7.x-3.1] Note: A backup of your project will be stored to backups directory if it is not managed by a supported version control system. Note: If you have made any modifications to any file that belongs to one of these projects, you will have to migrate those modifications after updating. Do you really want to continue with the update process? (y/n): y Project apps was updated successfully. Installed version is now 7.x-1.0-beta6. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/apps. [ok] Project boxes was updated successfully. Installed version is now 7.x-1.0-beta8. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/boxes. [ok] Project captcha was updated successfully. Installed version is now 7.x-1.0-beta2. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/captcha. [ok] Project colorbox was updated successfully. Installed version is now 7.x-1.3. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/colorbox. [ok] Project conditional_styles was updated successfully. Installed version is now 7.x-2.1. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/conditional_styles. [ok] Project context_field was updated successfully. Installed version is now 7.x-1.0-beta3. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/context_field. [ok] Project ctools was updated successfully. Installed version is now 7.x-1.0. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/ctools. [ok] Project date was updated successfully. Installed version is now 7.x-2.5. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/date. [ok] Project defaultcontent was updated successfully. Installed version is now 7.x-1.0-alpha6. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/defaultcontent. [ok] Project delta was updated successfully. Installed version is now 7.x-3.0-beta9. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/delta. [ok] Project entity was updated successfully. Installed version is now 7.x-1.0-rc2. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/entity. [ok] Project features was updated successfully. Installed version is now 7.x-1.0-rc2. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/features. [ok] Project link was updated successfully. Installed version is now 7.x-1.0. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/link. [ok] Project references was updated successfully. Installed version is now 7.x-2.0. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/references. [ok] Project node_reference_view_formatter was updated successfully. Installed version is now 7.x-1.0-beta3. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/node_reference_view_formatter. [ok] Project nodeconnect was updated successfully. Installed version is now 7.x-1.0-alpha2. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/nodeconnect. [ok] Project nodequeue was updated successfully. Installed version is now 7.x-2.0-beta1. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/nodequeue. [ok] Project panels was updated successfully. Installed version is now 7.x-3.2. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/panels. [ok] Project password_policy was updated successfully. Installed version is now 7.x-1.0-rc2. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/password_policy. [ok] Project pathauto was updated successfully. Installed version is now 7.x-1.0. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/pathauto. [ok] Project securepages was updated successfully. Installed version is now 7.x-1.x-dev. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/securepages. [ok] Project strongarm was updated successfully. Installed version is now 7.x-2.0-rc1. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/strongarm. [ok] Project token was updated successfully. Installed version is now 7.x-1.0. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/token. [ok] Project views was updated successfully. Installed version is now 7.x-3.3. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/views. [ok] Project views_boxes was updated successfully. Installed version is now 7.x-1.0-beta8. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/views_boxes. [ok] Project webform was updated successfully. Installed version is now 7.x-3.17. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/webform. [ok] Project xmlsitemap was updated successfully. Installed version is now 7.x-2.0-rc1. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/modules/xmlsitemap. [ok] Project omega was updated successfully. Installed version is now 7.x-3.1. Backups were saved into the directory /home/donmc/drush-backups/VEOffice/20120428202647/themes/omega. [ok] donmc@jbt:/var/www/VEOffice$ sudo drush @veo updatedb No database updates required [success] Finished performing updates. [ok] donmc@jbt:/var/www/VEOffice$ sudo drush @veo up Update information last refreshed: Sat, 04/28/2012 - 16:27 Update status information on all installed and enabled Drupal projects: Name Installed version Proposed Status version AddThis (addthis) 7.x-2.1-beta1 7.x-2.1-beta1 Up to date Apps (apps) 7.x-1.0-beta6 7.x-1.0-beta6 Up to date Backup and Migrate (backup_migrate) 7.x-2.2 7.x-2.2 Up to date Backup and Migrate Files (backup_migrate_files) 7.x-1.x-dev 7.x-1.x-dev Up to date Drupal 7.12 7.12 Up to date Boxes (boxes) 7.x-1.0-beta8 7.x-1.0-beta8 Up to date CAPTCHA (captcha) 7.x-1.0-beta2 7.x-1.0-beta2 Up to date Colorbox (colorbox) 7.x-1.3 7.x-1.3 Up to date OpenPublic (openpublic) 7.x-1.0-beta8 7.x-1.0-beta8 Up to date Comment notify (comment_notify) 7.x-1.0 7.x-1.0 Up to date Conditional Stylesheets (conditional_styles) 7.x-2.1 7.x-2.1 Up to date Context (context) 7.x-3.0-beta2 7.x-3.0-beta2 Up to date Context Bool Field (context_bool_field) 7.x-1.0-beta1 7.x-1.0-beta1 Up to date Context Breadcrumb Current Page 7.x-1.0-beta2 7.x-1.0-beta2 Up to date (context_breadcrumb_current_page) Context Field (context_field) 7.x-1.0-beta3 7.x-1.0-beta3 Up to date Chaos tools (ctools) 7.x-1.0 7.x-1.0 Up to date Date (date) 7.x-2.5 7.x-2.5 Up to date Default Content (defaultcontent) 7.x-1.0-alpha6 7.x-1.0-alpha6 Up to date Delta API (delta) 7.x-3.0-beta9 7.x-3.0-beta9 Up to date Diff (diff) 7.x-2.0 7.x-2.0 Up to date Entity API (entity) 7.x-1.0-rc2 7.x-1.0-rc2 Up to date Entity Autocomplete (entity_autocomplete) 7.x-1.0-beta1 7.x-1.0-beta1 Up to date Entity cache (entitycache) 7.x-1.1 7.x-1.1 Up to date Features (features) 7.x-1.0-rc2 7.x-1.0-rc2 Up to date Fieldgroup (field_group) 7.x-1.1 7.x-1.1 Up to date Follow (follow) 7.x-1.0-alpha1+0- 7.x-1.0-alpha1 Up to date dev google_analytics 7.x-1.2 7.x-1.2 Up to date IMCE (imce) 7.x-1.5 7.x-1.5 Up to date IMCE Wysiwyg API bridge (imce_wysiwyg) 7.x-1.0 7.x-1.0 Up to date Link (link) 7.x-1.0 7.x-1.0 Up to date References (references) 7.x-2.0 7.x-2.0 Up to date Node Reference View Formatter 7.x-1.0-beta3 7.x-1.0-beta3 Up to date (node_reference_view_formatter) Nodeblock (nodeblock) 7.x-1.2 7.x-1.2 Up to date Node Connect (nodeconnect) 7.x-1.0-alpha2 7.x-1.0-alpha2 Up to date Nodequeue (nodequeue) 7.x-2.0-beta1 7.x-2.0-beta1 Up to date Panels (panels) 7.x-3.2 7.x-3.2 Up to date Password policy (password_policy) 7.x-1.0-rc2 7.x-1.0-rc2 Up to date Pathauto (pathauto) 7.x-1.0 7.x-1.0 Up to date reCAPTCHA (recaptcha) 7.x-1.7 7.x-1.7 Up to date Secure Pages (securepages) 7.x-1.x-dev 7.x-1.x-dev Up to date Strongarm (strongarm) 7.x-2.0-rc1 7.x-2.0-rc1 Up to date Token (token) 7.x-1.0 7.x-1.0 Up to date Twitter Pull (twitter_pull) 7.x-1.0-rc1 7.x-1.0-rc1 Up to date Views (views) 7.x-3.3 7.x-3.3 Up to date Views Boxes (views_boxes) 7.x-1.0-beta8 7.x-1.0-beta8 Up to date Webform (webform) 7.x-3.17 7.x-3.17 Up to date Wysiwyg (wysiwyg) 7.x-2.1 7.x-2.1 Up to date XML sitemap (xmlsitemap) 7.x-2.0-rc1 7.x-2.0-rc1 Up to date Omega (omega) 7.x-3.1 7.x-3.1 Up to date Rubik (rubik) 7.x-4.0-beta8 7.x-4.0-beta8 Up to date Tao (tao) 7.x-3.0-beta4 7.x-3.0-beta4 Up to date No code updates available.