Now to perform a circular crop.

A series of how to examples on using jq, a command-line JSON processor.

In order to convert text strings to number format, there are two possibilities

• Use the Find & Replace function
• Use the VALUE function.

Using the Find & Replace Function

• Select the cell range which contains text strings
• Choose the Edit menu then the Find & Replace… submenu
• In the Find & Replace window, enter ^[0-9\-] in the Search for field
• In the Replace with field, enter &
• Select the Regular expressions checkbox
• Set the Search in listbox to Values
• Click Replace All

Using the VALUE Function

The function =VALUE(.) returns the numerical value of a string.

The Linux fd command is an quick and efficient way to find files in the terminal. Like the find command, it comes in handy often, however, the find command can be a bit tricky for those new to Linux and especially it's command line. This guide will help you get up to speed with this very useful command line tool.

The xargs utility allows you to build and execute commands from standard input. Xargs is usually used in combination with other commands through piping. In this tutorial, we'll cover the basics of using the xargs command.

TimeShift is a system restore tool for Linux. It provides functionality that is quite similar to the System Restore feature in Windows or the Time Machine tool in MacOS. TimeShift protects your system by making incremental snapshots of the file system manually or at regular automated intervals.

By now, you have likely heard words like "bitcoin" and "blockchain," perhaps even "Ethereum," and wondered what they all mean.

Do they refer to something useful, and if so, how would you go about using it?

This article is intended to put meaning behind these words and others, by highlighting one instance of the technology behind the concepts.

Osquery is an open source Operating System monitoring, query, and analytics software. Created by Facebook, it exposes an operating system as a high-performance relational database that can be queried using SQL-based queries.

Osquery is a multi-platform software, can be installed on Linux, Windows, MacOS, and FreeBSD. Osquery allows us to explore the operating system profile, performance, security and many more metrics by using SQL-based queries.

This guide shows how you can install and use incron on a Debian 8 (Jessie) system. Incron is similar to cron, but instead of running commands based on time, it can trigger commands when file or directory events occur (e.g. a file modification, changes of permissions, etc.).

Interesting approach to quick filesystem navigation.

Automated tools like autojump, z, and fasd address this problem by offering shortcuts to the directories you often go to. The author of this shell hack prefers a more manual solution, which provided quite an increase in efficiency with this.

Google has extended the support for its ARC Welder app and now Linux users can also run Android apps (APKs) right in their browser, with just the help of a downloadable Chrome app.