update drush 6.0 to 6.5 I have drush 6.0 and recently installed drush7 as well with composer. Now i would like to update drush 6.0 to latest release in drush version 6. Is there any work around to achieve?

Thanks,
Swaroop.
As the instructions say:


  To install Drush 6.x (stable):

composer global require drush/drush:6.*



Assuming you installed drush that way (using composer):


  To update to a newer version (what you get depends on your
  specification in ~/.composer/composer.json):

composer global update