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In the rush to adopt cutting-edge technologies like containers, cloud, and AI, many IT professionals overlook the foundational skills that keep systems running smoothly. A simple mistakeāforgetting to use sudoācan lead to hours of unnecessary debugging. This highlights the importance of mastering your base operating system, whether it’s Linux, Windows, or macOS.
You Should Know:
Linux Commands & Debugging Tips
1. Always Check Permissions
ls -l /path/to/file Verify file permissions sudo !! Re-run the last command with sudo
2. System Logs for Debugging
journalctl -xe Check system logs (systemd) tail -f /var/log/syslog Monitor logs in real-time
3. Process Management
ps aux | grep nginx Check if a service is running sudo systemctl restart apache2 Restart a critical service
4. Network Troubleshooting
ping google.com Check connectivity netstat -tuln List active ports sudo tcpdump -i eth0 Capture network traffic
Windows Admin Essentials
1. Permission Fixes
icacls "C:\path\to\file" /grant USER:F Grant full permissions
2. Event Logs
Get-EventLog -LogName System -Newest 20 Check system errors
3. Service Management
Restart-Service -Name "Spooler" Restart a stuck service
4. Network Diagnostics
Test-NetConnection google.com -Port 443 Verify port access
What Undercode Say:
Mastering the basicsāfile permissions, logs, process management, and networkingāsaves time and prevents outages. Whether Linux or Windows, a strong OS foundation ensures smoother troubleshooting and fewer “face-palm” moments.
Expected Output:
A well-structured guide on essential OS commands for IT professionals, emphasizing the importance of fundamentals in debugging and system administration.
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References:
Reported By: Unqanup Techsupporttips – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ā
