Install extension manually in 2.1

[momisingh]

how to install extension manually in 2.1.

[Tom Robertshaw]

The primary way to install an extension is through composer (http://devdocs.magento.com/guides/v2.2/comp-mgr/install-extensions.html). 

If you have a zip file, you can install it by copying it into the app/code/ directory. 

[Rakesh Jesadiya]

You can keep your code inside app/code folder in root of magento installation.

Just keep your code file at above location and run below command to work your extension,

 If your magento instance would be 2.0.* or 2.1.* run below command,

php bin/magento setup:upgrade
php bin/magento setup:static-content:deploy
php bin/magento cache:flush

 If your magento instance would be 2.2.* or greater version, Run below command,

php bin/magento setup:upgrade
php bin/magento setup:static-content:deploy -f
php bin/magento cache:flush

check now in your admin panel and frontend.