Linux free Command Explained: Memory, available, Swap and When RAM Is Full
Understand free -h on Linux: total, used, free, available, buffers/cache, swap, MemAvailable vs free column, and when to…
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How to Install Terraform on Linux (Binary, init, plan and apply)
Install Terraform on Linux from HashiCorp releases: unzip to /usr/local/bin, terraform init providers, plan before apply, state safety,…
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How to Install kubectl on Linux and Use It (get, describe, logs)
Install kubectl on Linux from official binaries, configure kubeconfig, switch context, kubectl get pods/nodes, describe events, logs, and…
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Bash Aliases on Linux: bashrc, Safe Shortcuts and System-Wide profile.d
Create Bash aliases on Linux: add to ~/.bashrc, source changes, useful examples, avoid dangerous rm aliases, system-wide /etc/profile.d,…
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Linux Load Average Explained: uptime, CPU Cores and When to Worry
Understand Linux load average from uptime and top: 1/5/15 minute values, compare to CPU core count, iowait vs…
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Docker logs and docker exec: Debug Containers on Linux (Compose Included)
Debug Docker on Linux: docker logs --tail and -f, docker ps -a exit codes, docker exec into containers,…
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How to Install Python on Linux (3.x, pip, venv and Best Practices)
Install Python 3 on Ubuntu and AlmaLinux: python3, pip, create venv, install requirements.txt, avoid breaking system Python, and…
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/tmp Cleanup Shell Script for Linux (find, Age, Allowlist and Safety)
Clean stale files under /tmp safely with a Bash script: mtime threshold, size summary, allowlist paths, dry-run mode,…
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Bash getopts Shell Script: Parse -d -r Flags for Linux CLI Tools
Build proper Linux CLI scripts with getopts: -h help, -d directory, -r retention days, validate combinations, and print…
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Bash Functions Shell Script: Reusable Blocks, Arguments and local Variables
Structure Linux Bash scripts with functions: pass arguments, use local variables, return codes, and a small deploy-style example…
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