System Administration Development Tutorials, Guides & Insights

Conclusion

dpkg is a crucial tool for managing software on Debian-based systems. With this cheat sheet, you can efficiently install, remove, and manage packages on your system. For a more user-friendly experience, APT serves as a front-end to handle complex tasks like dependency management, but understanding dpkg will give you more control over your system’s package management.

4.2 When to Use firewalld

• Use firewalld when you need dynamic, easy-to-manage firewall configurations with minimal hassle.
• Ideal for users who prefer a more abstracted and straightforward approach to firewall management.

   sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

   sudo yum install docker-ce

Section 2: Managing Packages with APT

APT (Advanced Package Tool) is the package management tool used by Debian and its derivatives, such as Ubuntu.

5.1 Securing a Web Directory

To secure a web directory so that only the owner can write to it, but others can read and execute files: