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The Swiss Army Knife of Text Operations in Linux

Jun 20, 2025 linux 2025

Sorting and Filtering Data One of the most common tasks performed on the command line is sorting data. This can be done using the sort command, which is part of the GNU Core Utilities package. Sorting is useful when you need to arrange a list of items in a specific order, such as alphabetically or numerically. Here's …

Using Grep Recursive and Regex to Search Big Data Sets

Nov 23, 2022 linux security scripting automation 2022

How do you find a needle in a haystack? Suppose you have a big data set consisting of various types of data including phone numbers, email addresses, user identifiers, addresses, etc. Within this dataset you need to pick out specific strings. Normally this would be easy: grep -air -e mystring -e anotherstring and …

Installing PowerShell Core on Amazon Linux

Feb 25, 2018 amazon linux PowerShell 2018

In preparation for my latest course in the AWS Networking Deep Dive series, I wanted to install PowerShell Core on an Amazon Linux instance to test out cross-platform compatibility for some scripts. Specifically, I wanted to see if I could use methods in the System.Net.Dns class to perform name resolution. The …

Visual Studio Code as a PowerShell Integrated Scripting Environment

Aug 15, 2017 aws cloud devops linux PowerShell scripting windows 2017

I know what you’re thinking. “Why use Visual Studio Code instead of the PowerShell ISE?” Well, if you’re using Mac OS or Linux, you don’t have the option to use the PowerShell ISE natively. And that’s a problem if you want to take advantage of the cross-platform capabilities of PowerShell Core. In this article, I’ll …

Creating a Linux LVM Logical Volume on an iSCSI SAN

Dec 8, 2014 iscsi linux lun netapp san storage 2014

Recently I had an Oracle database server used by some developers that was running out of space on its data volume mounted at /u02. The volume was a simple MBR volume (think fdisk), so it couldn’t be non-destructively extended without using a third-party utility like gparted. That would have been fine, but rather than …