From d0f74b8605d72868c49fec7d27225398118f9409 Mon Sep 17 00:00:00 2001
From: johannst <johannes.stoelp@gmail.com>
Date: Fri, 2 Oct 2020 11:28:11 +0200
Subject: updated lsof

---
 src/monitor/lsof.md | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

(limited to 'src/monitor/lsof.md')

diff --git a/src/monitor/lsof.md b/src/monitor/lsof.md
index 8253003..f621abe 100644
--- a/src/monitor/lsof.md
+++ b/src/monitor/lsof.md
@@ -2,12 +2,15 @@
 
 ```markdown
 lsof
+  -r <s> ..... repeatedly execute command ervery <s> seconds
   -a ......... AND slection filters instead ORing (OR: default)
   -p <pid> ... filter by <pid>
   +fg ........ show file flags for file descripros
   -n ......... don't convert network addr to hostnames
   -P ......... don't convert network port to service names
   -i <@h[:p]>. show connections to h (hostname|ip addr) with optional port p
+  -s <p:s> ... in conjunction with '-i' filter for protocol <p> in state <s>
+  -U ......... show unix domain sockets ('@' indicates abstract sock name, see unix(7))
 ```
 
 ```markdown
@@ -18,6 +21,18 @@ file flags:
   TR ......... truncate
 ```
 
+```markdown
+-s protocols
+  TCP, UDP
+
+-s states (TCP)
+  CLOSED, IDLE, BOUND, LISTEN, ESTABLISHED, SYN_SENT, SYN_RCDV, ESTABLISHED,
+  CLOSE_WAIT, FIN_WAIT1, CLOSING, LAST_ACK, FIN_WAIT_2, TIME_WAIT
+
+-s states (UDP)
+  Unbound, Idle
+```
+
 # Examples
 
 ## File flags
@@ -25,10 +40,11 @@ Show open files with file flags for process:
 ```markdown
 lsof +fg -p <pid>
 ```
+
 ## Open TCP connections
 Show open tcp connections for `$USER`:
 ```markdown
-lsof -a -u $USER -i tcp
+lsof -a -u $USER -i TCP
 ```
 **Note**: `-a` _ands_ the results. If `-a` is not given all open files matching
 `$USER` and all tcp connections are listed (_ored_).
@@ -38,3 +54,8 @@ Show open connections to `localhost` for `$USER`:
 ```markdown
 lsof -a -u $USER -i @localhost
 ```
+
+## IPv4 TCP connections in `ESTABLISHED` state
+```markdown
+lsof -i 4TCP -s TCP:ESTABLISHED
+```
-- 
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