`ss` is the modern netstat — faster, more readable, ships everywhere. Show only listening TCP ports with their owning process.
Bash
# All TCP listening sockets + the process holding them (needs root for process info)
sudo ss -tlnp
# UDP listeners
sudo ss -ulnp
# Both, summarized
ss -s
# Count active connections by state
ss -tn state established | wc -l
# Find what holds a specific port (alternatives — pick by availability)
sudo ss -tlnp 'sport = :8080'
sudo lsof -i :8080
sudo fuser 8080/tcp
# Legacy netstat — works but deprecated
sudo netstat -tlnp 2>/dev/nullSave your own code snippets
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