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Linux
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Linux is a Unix-like operating system. It is a free and open-source operating system, which means that it is available to everyone to use and modify. Linux is used by millions of people around the world, and it is the operating system of choice for many servers, supercomputers, and embedded devices.
Downloading and Unpacking Software in Linux: Complete Source Package Extraction and Preparation Guide
Before you can build anything from source, you have to get it onto your system and unpacked in…
apt Command in Linux: Complete Guide to Advanced Package Tool Commands and Parameters
I’ve managed Debian and Ubuntu servers for years now, and apt is one of those commands I use…
dpkg Command in Linux: Complete Guide to Debian Package Management and Parameters
apt gets all the attention because it’s what you use day to day, but underneath every single install,…
service Command in Linux: Complete Guide to Managing System Services and Parameters
I learned service back before systemctl became the dominant way of doing things, and even now, years into…
chgrp Command in Linux: Complete Guide to Changing File Group Ownership and Parameters
Group ownership is one of those Linux permission concepts that seems simple until you’re troubleshooting why a whole…
groupadd Command in Linux: Complete Guide to Creating New Groups and Parameters
Every time I set up access control for a new team, service, or application on a Linux system,…
usermod Command in Linux: Complete Guide to Modifying User Accounts and Parameters
Accounts change. People move teams, need their shell changed, get their home directory relocated, or need to be…
useradd Command in Linux: Complete Guide to Creating New Users and Parameters
If you manage Linux servers, sooner or later you have to add a human being (or a service)…
crontab Command in Linux: Complete Guide to Scheduling Cron Jobs and Parameters
If there’s one Linux command that’s quietly running more of the internet than people realize, it’s crontab. Log…
atrm Command in Linux: Complete Guide to Removing Scheduled Jobs and Parameters
Scheduling a one-time job with at is easy. Un-scheduling one you made a mistake on — or one…