Sysadmin

Sysadmins are the unsung heroes of the technology world. The Opensource.com sysadmin article collection includes open source tools for admins, career-related advice, and handy how-to's.

A network diagram

How I configure a DHCP server on my personal network

The Dynamic Host Configuration Protocol (DHCP) provides network configuration data to client hosts on a network, allowing for centralized network configuration management.

Person drinking a hat drink at the computer

Monitor your Linux firewall with nftwatch

I created the Linux nftwatch command to watch firewall traffic stats.

Linux su vs sudo: what's the difference?

A comparison of Linux commands for escalating privileges for non-root users.

Command line prompt

5 reasons to use sudo on Linux

Here are five security reasons to switch to the Linux sudo command. Download our sudo cheat sheet for more tips.

Tools for the sysadmin

Get started with NetworkManager on Linux

Learn what NetworkManager is and how to use it to view network connections and devices for Linux hosts.

Vector, generic Raspberry Pi board

Collect sudo session recordings with the Raspberry Pi

Logs and session recordings can help debug what happened on a given host if it acts strangely. Try this setup on your Raspberry Pi.

Subscribe to Sysadmin