Category: Tech Notes
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Schedule Tasks in Linux With cron and systemd Timers (Linux for Beginners, Part 15)
cron runs the jobs that keep Linux servers going. Learn crontab syntax, the PATH trap that kills jobs silently, and when a systemd timer does it better.
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How to Use vi and vim to Edit Files in Linux (Linux for Beginners, Part 14)
Open, edit, save, and quit files in Linux with vi and vim: the three modes, the vim-tiny arrow key trap, and how to save a file you do not own.
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How Do You Connect to a Remote Linux Server With SSH? (Linux for Beginners, Part 13)
SSH is how you reach every Linux server you will ever manage. Generate a key, copy it to the server, turn off passwords, and fix the errors that bite.
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Linux Networking From the Command Line: ip, ss, and ping (Linux for Beginners, Part 12)
Ping the address and it answers, but the name will not resolve. This is Linux networking from the command line: ip, ss, ping and dig, what each one proves, and how to make the config stick on Debian and RHEL.
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Partition, Format, and Mount a Disk in Linux (Linux for Beginners, Part 11)
A new disk gives you a block device and zero usable storage. Here is the partition, format, mount workflow, plus the fstab option that keeps a missing disk from wrecking your boot.
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Reading Linux Logs With journalctl and the systemd Journal (Linux for Beginners, Part 10)
Read Linux logs the fast way. journalctl by unit, boot, priority and time, the volatile-journal default that silently loses your logs, and how to keep the journal off your disk.
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How Does systemd Start and Manage Linux Services? (Linux for Beginners, Part 9)
systemctl controls every service on a modern Linux box. Learn start versus enable, reading status, safe drop-in overrides, journald logs, and why blame is the wrong tool for a slow boot.
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Install, Update, and Remove Software With apt and dnf (Linux for Beginners, Part 8)
A hands-on guide to Linux package management with apt and dnf: the six everyday commands, where packages come from, and how to fix the errors that stop an install.
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Linux Processes Explained: ps, top, and kill (Linux for Beginners, Part 7)
A process is a running program with a number. Learn to find it with ps and top, and stop it with the right signal, using real commands and output.
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Linux File Permissions and chmod, From rwx to Octal (Linux for Beginners, Part 6)
Read a Linux permission line, turn rwx into octal, and use chmod and umask with confidence, including the directory execute bit and the recursive chmod that breaks sites.
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Who Can Run What on a Linux System? Users, Groups, and sudo (Linux for Beginners, Part 5)
Linux allows or denies every action based on your user, your groups, and sudo. Here is how UIDs, /etc/passwd, /etc/shadow, groups, and the sudoers file actually decide what you can run.
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Copy, Move, and Delete Files From the Linux Command Line (Linux for Beginners, Part 4)
The five commands that do almost all file work in Linux: cp, mv, rm, mkdir and ln. Learn the quiet defaults that catch everyone, plus hard versus symbolic links.
Architect’s Toolkit
PJ’s Tools
VMware Cloud Foundation
- VCF Documentation
- VCF 9 Planning & Preparation Workbook
- VCF Bill of Materials (BoM)
- VMware Compatibility Guide
- VMware Interoperability Matrix
- VMware Configuration Maximums
- VMware Ports & Protocols
- VMware Hands-on Labs
- RVTools Download
Nutanix
AI & Cloud-Native Platform
- NVIDIA Build (Model Catalog)
- NVIDIA AI Enterprise Reference Architecture
- NVIDIA NIM Performance Benchmarking
- NVIDIA NGC Catalog
- NeMo Microservices Helm Chart
- Helm Charts Repository
- Hugging Face Models
Architecture & Design
About the Author
Dr Pranay Jha
Dr. Pranay Jha is a Cloud and AI Consultant with 18+ years of experience in hybrid cloud, virtualization, and enterprise infrastructure transformation. He specializes in VMware technologies, multi-cloud strategy, and Generative AI solutions. He holds a PhD in Computer Applications with research focused on Cloud and AI, has published multiple research papers, and has been a VMware vExpert since 2016 and a VMUG Community Leader.
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