Arch Linux users can install Drush through the Arch User Repository. Using your favorite AUR helper, install the drush package. For example, if using yaourt:

yaourt -S drush

If you are working with Drupal core development and need the git version of Drush, install drush-git. Example:

yaourt -S drush-git

Comments

hkirsman’s picture

I needed to run drush with sudo for the first time. I guess it made some files/folders. Still getting another error though:

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/json.so' - /usr/lib/php/modules/json.so: cannot open shared object file: No such file or directory in Unknown on line 0
'all' cache was cleared.        

but it doesn't seem to be a fatal error.