Magento2 : Basic Command

Setup Upgrade Using Command Line

php bin/magento setup:upgrade

Cache Clean Using Command Line

php bin/magento cache:clean 

Cache Flush Using Command Line

php bin/magento cache:flush 

Static Content Deploy

php bin/magento setup:static-content:deploy 

Reindexing

php bin/magento indexer:reindex 

View the list of indexers

php bin/magento indexer:info

See all modules Status

php bin/magento module:status 

Enable module

php bin/magentomodule:enable Namespace_Module

Disable module

php bin/magento module:disable Namespace_Module

To run unit test case 

php bin/magento dev:tests:run unit 

To run specific unit test case 

./vendor/bin/phpunit -c dev/tests/unit/phpunit.xml

To run specific integration test case 

../../../vendor/bin/phpunit --testsuite "test suite name"

After Install Magento2 Do some basic configration in project
Set Developer Mode
Magento comes  different modes.  (developer, production)
To enable developer module open the .htaccess file and uncomment the line “SetEnv MAGE_MODE developer”
after you uncomment magento2 will be set in developer model
Also run

php bin/magento deploy:mode:set developer
php bin/magento deploy:mode:show

Disable Cache
Login into magento admin, navigate to
System -> Cache Management
disable all caches here
you can manage cache from command line using

php bin/magento cache:disable
php bin/magento cache:clean
php bin/magento cache:flush
php bin/magento cache:status
php bin/magento cache:enable

Set Permissions
If you get permission error, cannot create directory error in any of the above command or in website
make sure to do below

sudo chmod -R 777 pub/
sudo chmod -R 777 var/