Posts
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Optimize Ubuntu Logs: btmp Log Rotation
btmp logs failed logins and grows forever on internet-facing servers. Set up logrotate to keep it under control before your disk fills up.
· Updated:12 min read -
Navigating the Storm: Analysis of Intel’s 13th and 14th Gen CPU Instability Issues
Intel 13th and 14th gen CPUs have a documented instability problem. Here's what's happening, who's affected, and what Intel is doing about it.
· Updated:13 min read -
Ansible: Task and Role Inclusions for Efficient Automation
Stop copy-pasting Ansible tasks across playbooks, use include_tasks, import_tasks, and roles to keep your automation DRY and maintainable.
6 min read -
Preserving Bash History in Multiple Terminal Windows
By default bash history is lost across multiple terminal sessions. Fix it with histappend and PROMPT_COMMAND so nothing gets overwritten.
· Updated:7 min read -
Finding the PID of a Process Using a Specific Port in Linux
Something's squatting on port 8080 and you need to know what. ss, netstat, and lsof one-liners to find the PID behind a port fast.
· Updated:6 min read -
Differences Between nohup, disown, and & in Linux
nohup, disown, and & all keep Linux processes alive after logout, but they work differently. Here's which one to reach for, when, and why.
· Updated:6 min read -
the lost+found Directory in Linux
What is lost+found and why does it exist? fsck puts recovered file fragments there after a crash, and no, you can't delete it.
· Updated:6 min read -
Understanding printf vs echo in Bash
echo is convenient but inconsistent across systems; printf is portable and precise, know when to use each and avoid the gotchas.
· Updated:6 min read -
Understanding Grep: A Comprehensive Guide
grep is more powerful than you think, regex patterns, context flags, recursive search, and piping tricks that save hours of log digging.
· Updated:11 min read -
The Role of Antivirus and Endpoint Detection and Response Systems
AV vs EDR, traditional antivirus signatures vs behavioral endpoint detection. What each catches, what it misses, and what you actually need.
· Updated:5 min read -
Key Parameters of Large Language Models
Temperature, top-p, top-k, context length, LLM inference parameters explained so you stop guessing why the model gives weird output.
· Updated:5 min read -
Switch Ubuntu to Hardware Enablement (HWE)
Running new hardware on Ubuntu LTS? The HWE kernel backports newer kernel and graphics support. Here's how to switch from generic to HWE safely.
· Updated:6 min read
