Linux Commands #31 - ping — Is That Server ALIVE? (Linux Network Basics in 8 Minutes)

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Three letters, one question: is anything listening at the other end? ping sends a tiny test packet to ANY address on the internet and times the round trip. Every sysadmin's first diagnostic move when something's broken.

In this lesson:
🎯 What ping actually does (ICMP echo request explained simply)
🎯 ping google.com vs ping 8.8.8.8 — DNS or network problem?
🎯 Reading the time= field: under 50ms = fast, over 500ms = slow
🎯 ping -c 4 to stop after exact N packets (no Ctrl+C dance)
🎯 The classic 'ping google but my router' debug pattern

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⏱ TIMESTAMPS
0:00 Sara's down server — where to start?
1:00 What ping does under the hood
1:30 First ping: localhost
1:45 Ping a real server
2:15 Reading the output: time, packet loss
3:30 Common mistake: ping doesn't mean port is open
4:30 Try it yourself

📚 Linux Commands — The First 50 · Lesson 31 of 50 · dargslan.com

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