How to report Unsolicited Commercial Communication to TRAI (Unwanted SMS and Calls)

Many times, we receive unwanted SMS or voice calls from people who market services or offer goods when we are registered on the “Do Not Disturb (DND)” lists of the Telecom Regulatory Authority of India (TRAI).

These telemarketers do not validate your status on the Do No Disturb database and send you marketing messages or . . . → Read More: How to report Unsolicited Commercial Communication to TRAI (Unwanted SMS and Calls)

How to install and run Turbo C 2.01 for DOS in DOSBOX in linux

After sooo many years, discovered that students in India were asked to do projects in Turbo C 2.01 in DOS. Amazing, but true!

That being the case, you can download Turbo C 2.01 for MS DOS from http://edn.embarcadero.com/article/20841 for free. It is antique software and embarcadero acquired it way back. They offer it as a . . . → Read More: How to install and run Turbo C 2.01 for DOS in DOSBOX in linux

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, . . . → Read More: 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 . . . → Read More: apt-get dist-upgrade freezes at reading package lists due to appstreamcli in Ubuntu

How to connect Epson L365 Ink Tank printer to a wireless network in infrastructure mode

To set it up Epson L365 Ink Tank printer properly with a Wireless Connection in Infrastructure mode, it can only be done on a Windows computer with the StartUp CD that came with the printer. If the Start Up CD is lost or damaged, the printer software and drivers can be downloaded by visiting the . . . → Read More: How to connect Epson L365 Ink Tank printer to a wireless network in infrastructure mode

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 . . . → Read More: 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 . . . → Read More: How to add a Guest Wireless Network with Isolation in OpenWRT on a wireless router

Cannot connect to OpenWRT router using SSH after OpenWRT firmware upgrade

OpenWRT is a very powerful router firmware. Since I wanted to upgrade the router firmware, I took a backup of the configuration and then did a complete erase of the configuration settings at the time of firmware upgrade. After logging in, and setting up SSH as a means to log in to the router, SSH . . . → Read More: Cannot connect to OpenWRT router using SSH after OpenWRT firmware upgrade

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. . . . → Read More: 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 . . . → Read More: How to change UID & GID in Linux for any user

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