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Linux servers

Tutorials focused on configuring and managing Linux servers.

  1. File permissions in *NIX systems
    Understanding file permissions in Unix / Linux based systems, and how to make files immutable.
  2. Enabling a Swapfile on Small Instances
    In this article I will explain how to enable a swapfile on small instances, and why it might be useful, even if you do have enough physical memory.
  3. Determining an optimal value for pm.max_children
    How to determine an optimal value for pm.max_children and related php-fpm settings for your server and web applications.
  4. Configuring VirtualBox with Host-only and NAT Adapter
    Tutorial showing how to configure a VirtualBox Guest VM with HOST-only and NAT adapter, while using the WWW folder from the HOST OS.
  5. Should You Edit conf.d Files or php.ini?
    You may have wondered what the /etc/php/8.0/conf.d/ directory is for in Debian and Ubuntu, and whether it is better to edit the conf.d files than editing php.ini directly; find out in this Tutorial.
  6. Installing the Apache HTTP Server in Linux
    Hot to install the Apache HTTP server in Linux.
  7. Running An SMTP Server On An EC2 Instance
    How to configure a SMTP server with letsencrypt on an amazon EC2 instance.
  8. Apache: Changing the Default Character Set
    Changing the default charset for the Apache HTTP server may be done by changing either the v-host .conf files or the charset.conf file. If you do not have access to these files, you can try .htaccess instead. Find out how in this tutorial.
  9. Multiple IPs with one EC2 instance
    How to have multiple public IPs with one AWS EC2 Instance
  10. Block and Unblock IPs in UFW
    How to easily block and unblock IPs in the UFW firewall.

Servers in Linux

In these tutorials, you can learn how to install and configure servers in Linux.