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Possible Reasons and Potential Solutions for 'Unable to Lock (/var/lib/dpkg/)' Error [Ubuntu]

Reasons and Solutions for “Unable to Lock (/var/lib/dpkg/)” Error in Ubuntu

Ever encountered the ‘Unable to lock (/var/lib/dpkg/)’ error on Ubuntu? Here are all the aspects related to this error and how to safely get rid of it.

By Himanshu Arora – May 28, 2016

If You Were Limited to One Mobile App, What Would It Be?

How to Solve 8 Common Google Play Store Errors

Have you ever received a cryptic error message while browsing Google Play? Here are eight of the most common Google Play store errors and their solutions.

By Paige Edenfield – Mar 21, 2015

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In 1965, Joe Sutter’s Boeing team began shaping the 747 around a future they thought would belong to supersonic jets, lifting the cockpit onto a hump so the nose could open for cargo once the giant subsonic passenger plane had outlived its brief moment

Jun 8, 2026

Vintage keyboard with tactile buttons paired with a modern digital interface on screen.

Apple’s original 1984 Macintosh keyboard had no arrow keys, no function keys, and no numeric pad because Steve Jobs wanted users to reach for the mouse first. Then Apple quietly sold the missing keys as an accessory.

Jun 8, 2026

When the SS Great Eastern laid the first working transatlantic telegraph cable in 1866, a message that had taken ten days by steamship suddenly crossed the ocean in minutes, and the financial markets of London and New York were forced, within a single trading week, to invent the modern concept of synchronised global price.

Jun 8, 2026

Flat lay of travel essentials including a passport, map, smartphone, and pop camera.

Masahiro Hara and Denso engineers built the QR code in 1994 to help Toyota suppliers scan car parts from any angle, then kept the patent open until phone cameras and a 2020 pandemic turned the factory square into a daily ritual on restaurant tables

Jun 8, 2026

In 1965, Mary Allen Wilkes wrote LAP6 for the LINC computer from her parents’ Baltimore home, testing an interactive operating system on a 250-pound machine in the living room and becoming the first known person to use a personal computer at home, twelve years before the Apple II reached buyers

Jun 8, 2026

Hands manipulating wires on breadboards for electronic prototyping.

When Grace Hopper wanted to explain a nanosecond to admirals who kept asking why satellites were slow, she handed each of them a piece of wire 11.8 inches long, the exact distance light travels in a billionth of a second, and told them to keep it in their pocket as a reminder that physics, not laziness, sets the limit.

Jun 8, 2026

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