• Stop opening your SSH port to the whole internet

  SSH, Remote Access & Zero Trust On Linux Stop opening your SSH port to the whole internet Technical Briefing | 10/7/2026 You probably have port 22 open on your edge...

  By Saket Jain Published October 6, 2026 Linux/Unix

• Tracing hidden kernel signals when journald goes dark

  Observability & Logging (Journald, EBPF Tracing) Tracing hidden kernel signals when journald goes dark Technical Briefing | 10/7/2026 You check your logs expecting to see why a service crashed, but...

  By Saket Jain Published October 6, 2026 Linux/Unix

• Stop module version mismatches from ruining your Friday

  Kernel News & Module Management Stop module version mismatches from ruining your Friday Technical Briefing | 10/6/2026 You finish a kernel update, reboot the server, and suddenly your specialized storage...

  By Saket Jain Published October 6, 2026 Linux/Unix

• Stop trap signals from killing your cleanup scripts midway

  Shell Scripting & Automation Stop trap signals from killing your cleanup scripts midway Technical Briefing | 10/6/2026 We have all written those scripts that create temporary state: lock files, scratch...

  By Saket Jain Published October 6, 2026 Linux/Unix

• Stop WireGuard from leaking traffic when your tunnel goes down

  Networking & Firewalls (Nftables/Iptables/WireGuard) Stop WireGuard from leaking traffic when your tunnel goes down Technical Briefing | 10/6/2026 You probably set up your WireGuard tunnel, saw the handshake succeed, and...

  By Saket Jain Published October 6, 2026 Linux/Unix

• When your CI runner chokes the host, and `nice` just shrugs

  DevOps Tooling On Linux (CI/CD Runners, Ansible) When your CI runner chokes the host, and `nice` just shrugs Technical Briefing | 10/6/2026 CI/CD runners are great until one of ’em...

  By Saket Jain Published October 5, 2026 Linux/Unix

• Stop making insecure or messy temporary files in your shell scripts

  Shell Scripting & Automation Stop making insecure or messy temporary files in your shell scripts Technical Briefing | 10/5/2026 You’ve written that quick utility script, right? The one that needs...

  By Saket Jain Published October 5, 2026 Linux/Unix

• Stop wondering why your binary is silently ignoring its config file

  Observability & Logging (Journald, EBPF Tracing) Stop wondering why your binary is silently ignoring its config file Technical Briefing | 10/5/2026 You have spent three hours tweaking a config file,...

  By Saket Jain Published October 5, 2026 Linux/Unix

• Stop Ansible from leaving your CI runners bloated with leftover state

  DevOps Tooling On Linux (CI/CD Runners, Ansible) Stop Ansible from leaving your CI runners bloated with leftover state Technical Briefing | 10/4/2026 CI runners are ephemeral by design, but anyone...

  By Saket Jain Published October 4, 2026 Linux/Unix

• Don’t let ZFS ARC thrash your RAM cache to death

  Filesystem & Storage (ZFS/Btrfs/LVM) Don’t let ZFS ARC thrash your RAM cache to death Technical Briefing | 10/4/2026 You probably think the ZFS Adaptive Replacement Cache is smart enough to...

  By Saket Jain Published October 4, 2026 Linux/Unix