Firewalld is one of the Linux firewall management tool and it is available on the in the Ubuntu's default repositories, therefore it is available to be installed from these repositories using the apt packaging system.

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A robots.txt file tells search engine crawlers which pages or files the crawler can or can't request from your site. This is used mainly to avoid overloading your site with requests; it is not a mechanism for keeping a web page out of Google. To keep a web page out of Google, you should use noindex directives, or to password-protect your page.

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How to fix briefly unavailable for scheduled maintenance in Wordpress: by removing the .maintenance file from the installation root folder.

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How to upload files to FTP using cURL command line. The command is very simple: curl -T backup-file.tar.gz ftp://username:password@ftp.server.com/backup/

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How to prepare a Windows Java Development Machine using Eclipse, NetBeans, Ant, Maven, MySQL, MongoDB, GIT, SVN.

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WordPress is a free and open-source content management system (CMS) based on PHP and MySQL.WordPress is the most popular blogging system in use on the Web.

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