Drush is a command line tool that allows you to interact with Drupal. It's a very powerful tool that can be used to install Drupal, manage modules, themes, and much more.
Instalation
It's pretty easy to install drush. On the terminal Go to your root drupal folder, and execute the following command:
composer require drush/drush
Drush Commands i use most
# Cache clear
drush cc
# Cache and rebuild, same as domain.com/admin/rebuild.php
drush cr
# Export configuration, creates a configuration file in /config/sync
drush cex
# Import configuration, imports the configuration file from /config/sync
drush cim
# List modules/themes installed, can add flags to be more specific
# --status
# --type
drush pml
# Enable module
drush en MODULENAME
# Disable module
drush pmu MODULENAME
# Specific Migration commands
## drush migrate:import MIGRATIONNAME
drush mim MIGRATIONNAME
## drush migrate:rollback MIGRATIONNAME
drush mr MIGRATIONNAME
## drush migrate:reset MIGRATIONNAME
drush mrs MIGRATIONNAME
drush mrs MIGRATIONNAME --update
drush mrs MIGRATIONNAME --force
## drush migrate:status MIGRATIONNAME
drush ms MIGRATIONNAME
## drush migrate:messages MIGRATIONNAME
drush mmsg MIGRATIONNAME