Linux Mastery - Linux Networking — ip, ss, curl, dig, ping (The 5 Tools) #06

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In this video, we dive deep into professional IT workflows to help you learn faster and code smarter. Whether you're a DevOps engineer, a SysAdmin, or a curious developer, our "No Filler" approach ensures you get the facts without the fluff.

"Why can't my server reach the internet?" Linux networking debugging is a
specific muscle — and these 5 tools are 90% of it. This lesson teaches the
modern toolkit: ip (replaces ifconfig + route), ss (replaces netstat), curl
(your HTTP swiss army knife), dig (DNS), and ping (still useful).

🎯 In this lesson:
✓ ip a — show interfaces (the new ifconfig)
✓ ip route — show routing table
✓ ss -tlnp — listening ports + processes (new netstat)
✓ curl -v + -I — HTTP debugging
✓ dig — DNS lookups (A, MX, NS, SOA)
✓ ping + traceroute (still useful, with caveats)
✓ nmcli + nmtui — NetworkManager from the shell
✓ /etc/hosts, /etc/resolv.conf — the config files

⏱ Chapters:
00:00 — Why these 5 tools
01:00 — ip a + ip route
01:30 — ss for open ports
02:00 — curl deep tour
02:30 — dig for DNS
03:00 — ping + traceroute
04:00 — Config files: hosts, resolv.conf
05:00 — Debug a real outage

🔗 Networking cheat sheet: https://dargslan.com
◀ Previous: L05 — Packages
▶ Next: L07 — SSH

#Linux #LinuxNetworking #DevOps
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