DEV Community

#sysadmin

Posts

đź‘‹ Sign in for the ability to sort posts by relevant, latest, or top.
apt full-upgrade removes old kernels. apt-get doesn't.

apt full-upgrade removes old kernels. apt-get doesn't.

Comments
7 min read
Is a Disk Dying in Your Dedicated Server? How to Check Disk Health on Linux

Is a Disk Dying in Your Dedicated Server? How to Check Disk Health on Linux

Comments
7 min read
Finding What Keeps Locking Out an Active Directory Account

Finding What Keeps Locking Out an Active Directory Account

Comments
5 min read
Find wasted Microsoft 365 licenses with PowerShell and Microsoft Graph

Find wasted Microsoft 365 licenses with PowerShell and Microsoft Graph

Comments
3 min read
State of Cyber Hygiene in Ontario: 4,450 Small Businesses Checked

State of Cyber Hygiene in Ontario: 4,450 Small Businesses Checked

Comments
6 min read
When Your Pipeline Goes Silent: The stdin Buffering Trap

When Your Pipeline Goes Silent: The stdin Buffering Trap

Comments
2 min read
Automating Hardware Warranty Tracking and Factory Specs in Snipe-IT ITAM

Automating Hardware Warranty Tracking and Factory Specs in Snipe-IT ITAM

Comments
2 min read
I Deleted a 48M Log to Free Space. The Next Write Still Hit 'No space left on device'.

I Deleted a 48M Log to Free Space. The Next Write Still Hit 'No space left on device'.

Comments
4 min read
Hunting for Web Shells After the Nextcloud CODE Flaw (CVE-2026-110447): A Sysadmin Checklist

Hunting for Web Shells After the Nextcloud CODE Flaw (CVE-2026-110447): A Sysadmin Checklist

Comments
2 min read
How we try to stop an AI operator in an RMM from running format C: (5 layers, and where they stop)

How we try to stop an AI operator in an RMM from running format C: (5 layers, and where they stop)

Comments
6 min read
DNS propagation: how long it really takes

DNS propagation: how long it really takes

Comments
9 min read
The Root Password Changed at 10:17 and Nobody Logged In — The VM Console Path Your Firewall Never Sees

The Root Password Changed at 10:17 and Nobody Logged In — The VM Console Path Your Firewall Never Sees

Comments
11 min read
The Linux server patching checklist (2026 edition)

The Linux server patching checklist (2026 edition)

Comments
4 min read
Your certificate renewed. Does your service know?

Your certificate renewed. Does your service know?

1
Comments
3 min read
Finding and Replacing setuid Binaries on Linux

Finding and Replacing setuid Binaries on Linux

Comments
1 min read
đź‘‹ Sign in for the ability to sort posts by relevant, latest, or top.