Magento 2 Upgrade – How to Upgrade Magento 2.1.13 to 2.3.0

magento2magento2.1.13magento2.3magento2.3.0

I want to upgrade my magento 2.1.13 to magento 2.3.0. But i don't know how to do it. I try to run "composer require magento/product-community-edition 2.3 –no-update" in command but it show a bug.
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Best Answer

composer require magento/product-community-edition 2.3.0 --no-update;
composer update;
rm -rf var/di var/generation;
php bin/magento cache:flush;
php bin/magento setup:upgrade;
php bin/magento setup:di:compile;
php bin/magento indexer:reindex;

After upgrade, check your Magento version with the following command:

php bin/magento --version
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