Set the 'desert' color scheme for Vim. easier on the eyes on dark backgrounds ... [Read More]

Learn how to use private certificate files to automatically authenticate to SSH servers. No password needed! ... [Read More]

Configure a static IP address on a Debian 10 server using the command line ... [Read More]

List all the users and user permissions in a MySQL database using the shell ... [Read More]

A quick tip on how to fix the Failed to fetch, unathorized error in Proxmox when trying to update the system ... [Read More]

Does your linux system need a reboot after an updating session? Let's find out! ... [Read More]

Learn how to get the filesystem information about a directory itself, NOT it's contents, using ls in unix ... [Read More]

So you want to delete all traces of certain commands from the Bash history? Here's how to do it! ... [Read More]

With certain network changes you might end up with nodes in your network having issues contacting other hosts outside of their subnet. A typical scenario is when the default gateway's IP is re-assigned to a new router and the old ... [Read More]

Ping sweeping is a basic technique to find active hosts on a network. You might be looking for a particular host in your infrastructure, like a network printer, or you simply want to assign a static IP to a new ... [Read More]

A guide on how to fix SSH cert authentication when it doesn't work ... [Read More]

Click here for a quick summary on how to create and administer volume groups and volumes in LVM ... [Read More]

Is it familiar? This annoying confirmation prompt appears on certain linux distribution when you try to copy a file that already exists at the destination. Here's how to solve this one and for all ... [Read More]

Have you ever needed to edit a config file after checking it's permissions, finding yourself typing in the same long file path twice in the shell? Or wondering how you can rerun the command you used a few steps ago ... [Read More]

Legend has it a dev once said: "I've been using vim for 2 years now, mostly because I cannot figure out how to exit it!" In this article we walk through the ways how to search certain words, or strings ... [Read More]

It's a quick guide to install a postfix server on CentOS, that can receive incoming email from the internet. In our lab we use our protectigate.com domain, and a user mailbox john@protectigate.com, who will receive our test email ... [Read More]

Installing an NFS file server on linux mainly consists of three short steps: install the NFS package, then configure (or in another words export) the NFS shares and lastly set the built-in firewall to allow incoming NFS queries ... [Read More]

This a quick guide on how to mount different type of volumes or shares in Linux. We go through the most common scenarios: local volumes, NFS and SMB shares. For each we discuss the manual way to mount them, also ... [Read More]

Have you ever bought a brand new SSD with 256GB on it's label, then when connecting it to a computer the storage space of only 240GB was showing? Were you taught in school that a 'kilobyte' is actually 1024 bytes, ... [Read More]

Always Hot Café needs a fast and cheap way to set up a VPN solution for it's workers. They don't want to invest in expensive hardware, or software. Also, the employees have Windows laptops and they want to use the ... [Read More]

UNIX type systems use the octal file permission model, that is limited in terms of setting access permissions for specific users and groups. By default there are only three attributes to be set on files and directories: for the owner, ... [Read More]

The task for today is to join a Microsoft Active Directory domain with our CentOS box. We use the sssd package to accomplish this, first we start with a basic CentOS installation, we go through the initial setup, then the ... [Read More]

Our goal is to make our website protected, configuring the HTTPS service on it to ensure encrypted traffic between the client and our server. We utilize Let’s Encrypt’s certbot, that will create and automatically renew the publicly signed SSL certificates ... [Read More]

    So what are Virtual Hosts and what are they for? John has a web server, connected to the internet with a single IP address. He has a website, called JohnBlog.com which is pointing to this web server. He ... [Read More]

Before You Begin Our job is really easy this time as we already have the process of installing Apache, MySQL and PHP on Debian based machines, as it is really similar to the process on RHEL based boxes. For the ... [Read More]

You might have been wondering: do I really need to type in my long password every time I SSH into a remote server, possibly making a typo and starting the password all over again without seeing any feedback on the ... [Read More]

To see how to deploy a WordPress site from scratch please check out this previous article where we went through the process step by step. In this article we set up automatic HTTPS, that means all the HTTP requests are ... [Read More]

In this tutorial we will deploy a WordPress site for http://protectigate.com We assume that a web server is already ready for us. If you don’t have one you can check the installation process for Debian (like Ubuntu) and RHEL (CentOS) ... [Read More]

Before You Begin A minimal installation of Debian or Ubuntu linux is the starting point, with network connectivity. L.A.M.P is an acronym, stands for the building elements of a fully working website:

• Linux is probably the most stable and ... [Read More]

To make use of a trunk interface connected to our linux box with a single interface we can configure subinterfaces accessing specific VLAN segments, here we will use Debian and RHEL, assigning two subinterfaces, to each, on will use DHCP ... [Read More]

Time to time we can face the problem that our storage is running out of space on our Linux box. Now what options do we have? We can attach a new storage to the system and mount it in the ... [Read More]

Text Mode Many times it is preferable to run the CentOS linux installer in text mode, avoiding the GUI. For instance when using an older machine with less resources or when deploying a VM when console access might be limited, ... [Read More]