drush disable js/css aggregation

drush-turn-off-aggregate-assets.txt

Drupal 7
// To turn on JS Aggregation
    drush vset preprocess_js 1 --yes

// To clear all Cache
    drush cc all

// To disable JS Aggregation
   drush vset preprocess_js 0 --yes

// To clear cache of JS and CSS only
   drush cc css+js

// To enable CSS Aggregation
   drush vset preprocess_css 1 --yes

// To disable CSS Aggregation
   drush vset preprocess_css 0 --yes

// If you have anonymous page caching turned on then you might also need to disable that. This can be done by setting the cache variable to 0.

drush variable-set cache 0


Drupal 8:
# disable CSS/JS aggregation
drush -y config-set system.performance css.preprocess 0
drush -y config-set system.performance js.preprocess 0
drush sset system.maintenance_mode TRUE

Drupal 7:
drush vset maintenance_mode 1
drush variable-set --yes maintenance_mode_message "This site is being maintained"

Drupal 6:
drush vset site_offline 1