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Display disk usage in GB on Linux: use du -sh --block-size=1G . (GNU/Linux) or du -sg . (macOS/BSD). Simplest universal method: du -sh . auto-scales to GB. For scripts: set export BLOCKSIZE=1G. #Linux #CommandLine #DiskUsage

https://pupuweb.com/how-can-i-make-the-linux-du-command-report-disk-usage-in-gigabytes/

How Can I Make the Linux du Command Report Disk Usage in Gigabytes? - PUPUWEB

Is There a Simple Way to Get the du Command to Display Sizes in GB? When managing files and directories on a Linux system, understanding how much space

PUPUWEB

Find hostnames from IP addresses on Windows using: nslookup IP (reverse DNS), ping -a IP (quick lookup), nbtstat -a IP (local NetBIOS), or tracert IP (shows route + name). For automation: use FOR loops with nslookup. #Windows #Networking #CommandLine

https://pupuweb.com/how-can-i-find-a-hostname-from-an-ip-address-on-windows/

How Can I Find a Hostname from an IP Address on Windows? - PUPUWEB

What's the Easiest Way to Resolve a Hostname Using an IP in Windows? Have you ever had an IP address and wondered which computer or server it belongs to?

PUPUWEB

List Linux users and groups easily: getent passwd (all users), getent group (all groups), groups username (user's groups). For complete reports: cut -d: -f1 /etc/passwd | xargs groups. Bash shortcut: compgen -u or compgen -g. #Linux #SystemAdmin #CommandLine

https://pupuweb.com/how-can-i-easily-see-all-users-and-their-assigned-groups-in-linux/

How Can I Easily See All Users and Their Assigned Groups in Linux? - PUPUWEB

What Are the Best Commands to List Every User and Group in a Linux System? Managing users and groups is a fundamental task on any Linux system. You can

PUPUWEB

View .cer certificate details fast: Windows—right-click > Open or use certutil -dump. Cross-platform—use openssl x509 -inform der -noout -text -in file.cer. PowerShell: New-Object X509Certificate2 then .Import(). #DigitalCertificate #OpenSSL #Windows

https://pupuweb.com/curious-about-a-cer-file-how-can-you-easily-view-its-digital-certificate-details/

Curious About a .cer File? How Can You Easily View Its Digital Certificate Details? - PUPUWEB

Need to Check a Digital Certificate? Here’s a Simple Guide to Reading a .cer File. You have a file with a .cer extension on your computer. This file is a

PUPUWEB

SFTP uses port 22 (not 21) because it runs over SSH, not FTP. FTP uses port 21 (insecure), FTPS adds SSL/TLS encryption to FTP, while SFTP is a completely different SSH-based protocol. Connect with custom ports using -oPort=NUMBER. #SFTP #SSH #FileTransfer

https://pupuweb.com/what-port-does-sftp-really-use-and-why-is-it-confused-with-ftps-port-21/

What Port Does SFTP Really Use and Why Is It Confused with FTP's Port 21? - PUPUWEB

Is the SFTP Port Always 22, and How Do You Connect If It's Different? A common question in IT and web development circles is whether SFTP uses port 21 or

PUPUWEB

On modern Linux (RHEL 7+), reboot and shutdown -r now are functionally identical via systemd. Use shutdown -r for scheduling and logging. Use reboot to avoid typos. Best practice: systemctl reboot. #Linux #SystemAdmin #ServerManagement

https://pupuweb.com/when-rebooting-a-linux-server-should-you-use-reboot-or-shutdown-for-maximum-safety/

When Rebooting a Linux Server, Should You Use 'reboot' or 'shutdown' for Maximum Safety? - PUPUWEB

Which Linux Restart Command Is Truly Safer: Reboot or Shutdown -r Now? System administrators often face the task of restarting servers. This can be for

PUPUWEB

Protect your data: choose AI tools with encryption, zero data retention, GDPR/CCPA compliance, and transparency. For sensitive work, use business plans with HIPAA compliance (transcription) or privacy-first APIs. Read policies carefully. #AIPrivacy #DataProtection #SecureAI

https://pupuweb.com/ai-tools-privacy-features/

Worried About AI Data Leaks? How Can You Find Secure AI Apps That Respect Your Privacy? - PUPUWEB

See the best AI tools with strong privacy features in 2025. Compare options that secure your data and meet U.S. privacy regulations.

PUPUWEB

U.S. freelancers: secure your business with password managers, 2FA, VPNs, encrypted backups (3-2-1 rule), WPA3 Wi-Fi, secure file-sharing tools, client NDAs, and CCPA compliance. Protect data or risk reputation. #FreelanceSecurity #Cybersecurity #DataProtection

https://pupuweb.com/cybersecurity-checklist-freelancers-usa/

How Can Remote Freelancers in the USA Easily Protect Their Business and Client Data? - PUPUWEB

Protect your work with this cybersecurity checklist for freelancers in the U.S. Learn practical tips to secure data, networks, and client files.

PUPUWEB

Smart homes face major risks: weak passwords, outdated firmware, unencrypted data, and exposed cameras. Protect with strong passwords, 2FA, WPA3 Wi-Fi, separate IoT networks, and U.S. Cyber Trust Mark devices. #SmartHomeSecurity #IoTSecurity #CyberSafety

https://pupuweb.com/smart-home-vulnerabilities/

Is Smart Home Secretly Security Risk? A Complete Guide to U.S. Vulnerabilities and Fixes - PUPUWEB

Discover the top smart home vulnerabilities in 2025 and learn practical steps to secure your IoT devices, cameras, and networks in the U.S.

PUPUWEB

Windows 365 Boot secures remote work with Connection Center at login (multi-PC management), cross-region disaster recovery (<4hr RTO), enhanced troubleshooting, and custom display settings—all via Intune management. #Windows365 #CloudPC #RemoteWork

https://pupuweb.com/how-can-windows-365-boots-new-features-secure-your-remote-workforce/

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Finding a wedding venue shouldn't be stressful. Breezit, an AI-powered platform, simplifies the search for California couples by providing transparent pricing and direct booking. See how technology is making wedding planning easier. #WeddingPlanning #EventTech #AI

https://inpathways.net/is-there-an-app-that-makes-finding-and-budgeting-for-wedding-venues-less-stressful/