Cache Clear

Wordpress

wp cache flush
rm -rf wp-content/cache/

Magento

bin/magento cache:clean
php bin/magento c:c
bin/magento cache:flush
php bin/magento c:f

Prestashop

Prestashop 1.6

delete all of the content in the following directories except for the index.php file:

img/tmp
cache/smarty/cache
cache/smarty/compile

Prestashop 1.7

Erase all the files and folders inside the following directories:

var/cache/dev (for development mode) or var/cache/prod (for production mode)
img/tmp

Laravel

To clear Laravel Cache, refer to Clear Laravel Cache