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+# ss(8)
+
+```markdown
+ss [option] [filter]
+```
+
+```markdown
+[option]
+  -p ..... Show process using socket
+  -l ..... Show sockets in listening state
+  -4/-6 .. Show IPv4/6 sockets
+  -x ..... Show unix sockets
+  -n ..... Show numeric ports (no resolve)
+  -O ..... Oneline output per socket
+```
+
+```markdown
+[filter]
+  dport/sport PORT .... Filter for destination/source port
+  dst/src ADDR ........ Filter for destination/source address
+
+  and/or .............. Logic operator
+  ==/!= ............... Comparison operator
+
+  (EXPR) .............. Group exprs
+```
+
+# Examples
+
+Show all tcp IPv4 sockets connecting to port `443`:
+```markdown
+ss -4 'dport 443'
+```
+
+Show all tcp IPv4 sockets that don't connect to port `443` or connect to address `1.2.3.4`.
+```markdown
+ss -4 'dport != 443 or dst 1.2.3.4'
+```
+