Posts
Page 55 of 58
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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 -
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.
5 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.
10 min read -
Essential Linux Commands for Daily Use
The Linux commands every sysadmin reaches for daily, file ops, process management, networking, and text manipulation you can't live without.
18 min read -
Certificate Pinning: A Secure Connection Guide
Certificate pinning locks your app to a specific TLS cert so MITM attackers can't swap in a rogue CA, how it works and when to use it.
7 min read -
Docker Networking Essential Guide for All Skill Levels
Bridge, host, overlay, macvlan, and none, every Docker network mode explained with real use cases from beginner to production.
8 min read -
Understanding CMD and ENTRYPOINT in Dockerfiles
CMD and ENTRYPOINT both define what runs in a container but work differently, exec vs shell form, and how they interact when combined.
8 min read -
Copying Files Between Docker Containers and Host Machines
Use docker cp to move files between running containers and your host machine, no volumes needed for one-off file transfers.
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Understanding the regreSSHion Vulnerability in OpenSSH
regreSSHion (CVE-2024-6387) is a remote code execution bug in OpenSSH, what it is, which versions are affected, and how to patch fast.
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Multiple Actions with a Single docker exec Call
Run multiple commands in one docker exec call by piping a heredoc to the container shell, chain dependent steps and skip repeated container roundtrips.
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Mastering xargs in Linux
xargs turns stdin into arguments, build complex pipelines, run parallel jobs, and handle filenames with spaces without breaking everything.
9 min read -
FFmpeg: Advanced Video & Audio Manipulations
Advanced FFmpeg techniques, filter graphs, stream mapping, subtitle burning, speed adjustment, and batch processing scripts.
9 min read
