Articles tagged "sysadmin"
Page 1 of 2
Bash Scripting for DevOps 2026: 5 Production Scripts with Error Handling and Tests
Bash scripting for DevOps engineers: 5 production-ready scripts for log rotation, HTTP health checks, PostgreSQL backup, Docker deploy, and secret rotation — with error handling, ShellCheck, and bats tests.
Linux File Permissions Explained 2026: chmod, chown, umask, SUID/SGID, and ACLs
Linux file permissions complete guide 2026: read/write/execute bits, chmod octal and symbolic, chown, umask, SUID/SGID security risks, sticky bit, and setfacl/getfacl for fine-grained ACLs.
Linux Process Management 2026: ps, top, htop, btop, kill, nice, and OOM Killer
Linux process management guide 2026: ps aux, top, htop, btop/bpytop, kill signals, nice/renice, lsof, strace, /proc filesystem, zombie processes, OOM killer, and systemd-cgtop for cgroups.
tmux Tutorial 2026: From Zero to Productive with Sessions, Config, and Neovim Integration
Complete tmux tutorial 2026: sessions, windows, panes, full .tmux.conf config, automation startup script, SSH persistence, neovim integration with vim-tmux-navigator, and tpm plugins.
Ansible Roles and Galaxy: Modular Playbooks for Production (2026)
Ansible roles tutorial 2026. Create roles with tasks, templates, handlers, and defaults. Use Ansible Galaxy community roles, pin versions in requirements.yml, and test with Molecule + Docker.
awk, sed, and grep for Linux Sysadmins: Practical Guide with Real Examples (2026)
Master awk, sed, and grep for Linux sysadmin work in 2026. Parse nginx logs, edit configs in-place, filter processes, and build log analysis pipelines. Every example is real-world.
Nmap for Sysadmins: Network Scanning and Security Audit Guide (2026)
Nmap tutorial 2026 for sysadmins. Beyond nmap -sV: NSE scripts for TLS audit, CVE detection, EternalBlue check, network inventory, and ndiff for tracking infrastructure changes.
Ansible for Linux Sysadmins: Automate Server Configuration with Playbooks (2026)
Learn Ansible for Linux sysadmins. Install Ansible, write your first playbook, use roles, manage inventory, and automate server configuration in 2026.
IBM DB2 Administration Cheatsheet — Essential Commands (2026)
IBM DB2 LUW quick reference 2026. Commands for start/stop, connect, list databases, backup, users, locks, performance, and common error codes. DB2 11.1, 11.5, 12.x.
db2stop force: How to Stop a DB2 Instance Safely (2026 Guide)
Learn how to use db2stop and db2stop force to stop a DB2 instance safely. Includes error handling when db2stop force fails.