How to enable Developer options or menu on an Android Phone

On the phone, select Settings -> About Phone. Locate the option called Build number and press on it 7 times in succession.

You will then find that Developer Options is enabled in the About Phone menu.

How to put phone into USB Debugging mode from Developer Options

First enable Developer Options.

On the phone, select Settings -> About Phones -> Developer Options. Locate an option named Android debugging and change the toggle to On.

The phone will now be in USB Debugging mode.

Error installing or upgrading flashplugin-installer

Error installing or upgrading flashplugin-installer Can’t drop privileges for downloading as file ‘/var/lib/update-notifier/package-data -downloads/partial’

Start up synaptic and install flashplugin-installer. Error will not appear. There is a difference in apt-get install flashplugin-installer and synaptic, that apt-get does not run with full privileges, whereas for synaptic to install packages you are asked to enter your password . . . → Read More: Error installing or upgrading flashplugin-installer

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 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

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

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