netstat
SafeConnections (legacy)
netstat -tulnp
Lists listeners and connections. ss supersedes it, but old servers and runbooks still speak netstat.
Examples
netstat -tulnp | grep :80Who listens on port 80
Syntax
netstat [-tulnp] [-rn] (新環境はss推奨)
Before you run it
Read only.
Related commands
The same reference, with no signal at all
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