Netstat check port

Netstat find port

netstat -na | find "8080"

Source: stackoverflow.com

Linux query port use by pid

$ sudo ss -lptn 'sport = :80'
State   Local Address:Port  Peer Address:Port              
LISTEN  127.0.0.1:80        *:*                users:(("nginx",pid=125004,fd=12))
LISTEN  ::1:80              :::*               users:(("nginx",pid=125004,fd=11))

Source: unix.stackexchange.com

Netstat check port

sudo netstat -plnt

Source: support.rackspace.com

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