How to mitigate the threat of being a victim of ransom ware

Ransom ware seems to have gotten the better of many ordinary users. However, it is not a threat that has no mitigation measures available to the ordinary user, but is more of following good basic security and hygiene practices, to not fall prey to a ransom ware threat. Do the following: If you use Linux, … Continue reading How to mitigate the threat of being a victim of ransom ware

apt-get dist-upgrade freezes at reading package lists due to appstreamcli in Ubuntu

Today, when I attempted to update the Ubuntu system to install the latest patches, the system hanged infinitely at the sudo apt-get update command. This appears to be a bug, but nonetheless, system patching is our priority and this is the workaround, till it gets fixed. To type the commands below, open a linux terminal … Continue reading apt-get dist-upgrade freezes at reading package lists due to appstreamcli in Ubuntu

How to disable user list and guest user login in Ubuntu 16.04 LTS

To disable the user list and guest user login in Ubuntu 16.04 LTS login screen, open a terminal window and do the following: $ cd /etc/lightdm <enter> $ sudo mkdir lightdm.conf.d <enter> $ sudo cd lightdm.conf.d <enter> $ sudo mousepad 50-config.conf <enter> Enter the text below into the file. [SeatDefaults] greeter-hide-users=true greeter-show-manual-login=true allow-guest=false Save the … Continue reading How to disable user list and guest user login in Ubuntu 16.04 LTS

How to add a Guest Wireless Network with Isolation in OpenWRT on a wireless router

Problem Statement Several guests come home and ask for Wi-Fi access to connect to the internet to see emails, etc. Most times, we give them our main SSID wireless password everytime to connect. This has several disadvantages, though not limited to those listed below: The guest now has a permanent record of your Wireless SSID … Continue reading How to add a Guest Wireless Network with Isolation in OpenWRT on a wireless router

How to calculate MD5 or SHA256 sums in Linux and Android

Many of us use Linux Distributions like Ubuntu, Fedora, available for free on the Internet. To install these distributions on our computers, we need to down their ISO files. Recently, the Linux Mint ISO was hacked and malware inserted into some of it's files. It was then repacked and put up on an external website. … Continue reading How to calculate MD5 or SHA256 sums in Linux and Android

How to change UID & GID in Linux for any user

As the commands entered below have the potential to cause inaccessibility to files or data, make sure you have taken a data back up first. Once you have backed up your data, proceed as follows. Do not proceed further if you are not confident or aware of what you are doing. Proceed as below at … Continue reading How to change UID & GID in Linux for any user

How to upgrade to latest kernel of Ubuntu 14.04.3 LTS or 14.04.4 LTS from Ubuntu 14.04.2 LTS

Ubuntu 14.04 LTS is a Long Term Support version of the Ubuntu Linux Operating System. Over time, Ubuntu releases point updates to it. Currently, the point update is at Ubuntu 14.04.3 LTS. When you update your Ubuntu packages using:$ sudo apt-get update <enter>$ sudo apt-get dist-upgrade <enter> you will find that you are automatically upgraded … Continue reading How to upgrade to latest kernel of Ubuntu 14.04.3 LTS or 14.04.4 LTS from Ubuntu 14.04.2 LTS

How to display all email in Plaintext only in the Evolution Email Client

After installing Linux Mint, I found that I did not have an option on the Evolution Preferences -> HTML Messages tab, to make sure that all email I received was only displayed as plain text. The option display was as per Figure 1 below. Figure 1Figure 2 If you too do not see the Plain … Continue reading How to display all email in Plaintext only in the Evolution Email Client

USB OTG cable and printing on HP All-In-One Printer from Android

I wonder why we need to route printing activities over Cloud Print to print on a printer installed at home. Fortunately, I have an HP F735 deskjet printer which does not have wireless printing capability and I need to print from an Android phone to it. The only way was to use a USB OTG … Continue reading USB OTG cable and printing on HP All-In-One Printer from Android