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<VirtualHost *:80>
    ServerAdmin webmaster@localhost
    DocumentRoot /home/web/default
    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined
 
    <Directory "/home/web/default">
        AuthType Basic
        AuthName "Restricted Content"
        AuthUserFile /usr/local/etc/apache2/.htpasswd
        Require valid-user
    </Directory>
</VirtualHost>

create the users and passwords file
Insert new line code

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htpasswd /usr/local/etc/apache2/.htpasswd another_user