Linux ping Command: Test Connectivity and Read the Output
The ping command is the fastest way to test network connectivity on Linux. Learn to read ping output, use key options, run a continuous ping, and fix errors.
Paul Hill
16 min
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AWS Solutions Architect Associate: Exam Guide and Study Plan
AWS Solutions Architect Associate guide: SAA-C03 exam format, domains, cost, retakes, and renewal, plus an 8-week study plan you can start right away.
Paul Hill
17 min
Linux chown Command: Change File Owner and Group
The chown command changes who owns a Linux file. Learn owner:group syntax, chown recursive with -R, --from, symlinks, and how to fix Operation not permitted.
Paul Hill
16 min
CEH Certification: Exam, Cost, and Whether It Fits Your Career
CEH certification guide: the CEH v13 exam format, eligibility paths, full cost breakdown, renewal rules, and how CEH compares with Security+, PenTest+, and OSCP.
Paul Hill
16 min
Linux netstat Command: Check Ports and Connections (and When to Use ss)
Learn the Linux netstat command: list listening ports with netstat -tuln, find the program behind a port, read TCP states like TIME_WAIT and CLOSE_WAIT, check routes and interface stats, and use the modern ss and ip equivalents.
Paul Hill
20 min
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