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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.

Team checklist

Timers provide finer-grained control of events than cronjobs.
Alarm clocks with different time

Keep your computer time in sync with NTP, Chrony, and systemd-timesyncd.
Penguin with green background

Learn how systemd determines the order services start, even though it is essentially a parallel system.
computer servers processing data

Connect to your console for troubleshooting with Tio, a Linux serial communication program.
Magnifying glass on code

While systemd is not really a troubleshooting tool, the information in its output points the way toward solving problems.
woman on laptop sitting at the window

Units are the basis of everything in systemd.
Open data brain

The core of a site reliability engineer's job is building scalable applications and infrastructure.
collection of hardware on blue backround

Time-saving shortcuts for a commonly used open source tool.