https://sudonull.com/sysadmin-recommendations-for-small-business
Practical steps for sysadmin in SMB: KPI, backups, DRP, changes. Minimize risks and conflicts with business. Study the guide for stable IT infrastructure.
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https://sudonull.com/10-sysadmin-questions-for-it-infrastructure
Assess sysadmin competencies with 10 questions: backups, recovery, performance, security. Improve IT without tech knowledge. For SMB managers.
https://sudonull.com/sysadmin-memo-17-rules-of-office-infrastructure
Key principles for system administrators: from restricting permissions to backup. Practical guidelines for stable IT infrastructure. Study and apply.
https://sudonull.com/df-du-differ-find-deleted-files-linux
Breaking down why df shows 95% usage, and du — 20%. Step by step: lsof +L1 for search, > /proc/PID/fd/FD for cleanup without restart. copytruncate in logrotate. For sysadmin and DevOps.
https://sudonull.com/dr-plan-critical-services-and-failure-points
Learn how to create a disaster recovery plan: from identifying services to analyzing dependencies. Practical steps for sysadmin middle/senior. Start DR planning today.
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