Linux du Command: Check Disk Usage of Files and Folders
The du command shows how much disk space files and folders use in Linux. Learn du -sh, sort by size, max depth, apparent size, and why du and df disagree.
Paul Hill
14 min
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Terraform Certification: HashiCorp Associate Exam Guide
Terraform certification guide: the HashiCorp Terraform Associate (004) exam, $70.50 cost, objectives, renewal, and the new Professional and Advanced exams.
Paul Hill
16 min
Linux sudo Command: Run Commands as Root Safely
The sudo command runs Linux commands as root using your own password. Learn sudo -l, sudo -i, visudo, sudoers rules, and how to add a user to sudoers safely.
Paul Hill
15 min
RHCSA Certification: Exam, Cost, and Study Plan
RHCSA certification guide: what the EX200 exam covers on RHEL 10, the $500 cost and free retake, renewal rules, and a study plan that gets you exam-ready.
Paul Hill
16 min
Linux tail Command: View and Follow the End of a File
The tail command shows the last lines of a file in Linux. Learn tail -n, tail -f to follow logs live, tail -F for log rotation, and filtering with grep.
Paul Hill
13 min
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