Stop df and du from telling you different lies about your disk space
Disk & Filesystem Management (Du/Df/Lsblk/Fstrim) Stop df and du from telling you different lies about your disk space 🧩 The Challenge You stare at df and see the disk is...
Month: July 2026
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Stop your virtio balloon driver from starving your host memory
Virtualization (KVM/QEMU/Libvirt) Stop your virtio balloon driver from starving your host memory Technical Briefing | 7/29/2026 You set up a bunch of VMs on a single host and figured memory...
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Stop bash variable expansion from breaking your regex
Shell Scripting / Bash Tricks Stop bash variable expansion from breaking your regex 🧩 The Challenge You finally wrote the perfect grep regex with all those backslashes and brackets, only...
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Stop your shell history from becoming a fragmented mess
Environment & Shell Customization (Aliases/Functions/.Bashrc) Stop your shell history from becoming a fragmented mess 🧩 The Challenge Opening five terminals at once and realizing your history file is completely out...
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Stop your SSH bastion from becoming a single point of failure
SSH, Remote Access & Zero Trust On Linux Stop your SSH bastion from becoming a single point of failure Technical Briefing | 7/29/2026 Everyone loves the idea of a bastion...
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Stop tar from silently skipping your symlinks during migrations
Backup & Recovery (Rsync/Tar/Dd) Stop tar from silently skipping your symlinks during migrations 🧩 The Challenge Pulled a massive backup of a web root last week only to realize every...
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Stop new group members from failing to see files
User & Group Management Stop new group members from failing to see files 🧩 The Challenge Setting up a shared directory for a dev team is a classic rite of...
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Stop your Btrfs subvolumes from ballooning into metadata hell
Filesystem & Storage (ZFS/Btrfs/LVM) Stop your Btrfs subvolumes from ballooning into metadata hell Technical Briefing | 7/28/2026 Btrfs is great until you hit the wall. You start seeing massive disk...
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Stop your cgroups from hoarding orphan tasks after a process dies
Container Basics On Linux (Namespaces/Cgroups) Stop your cgroups from hoarding orphan tasks after a process dies 🧩 The Challenge Dealing with cgroup v2, I’ve found that even after a container...
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Stop curl from lying to you about silent connection failures
Networking & Firewall (Ss/Netstat/Iptables/Nftables/Curl) Stop curl from lying to you about silent connection failures 🧩 The Challenge Everyone has spent an hour chasing a ghost in the firewall, convinced their...