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-# lsof(8)
-
-```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
-file flags:
-  R/W/RW ..... read/write/read-write
-  CR ......... create
-  AP ......... append
-  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
-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 $USER -i TCP
-```
-**Note**: `-a` _ands_ the results. If `-a` is not given all open files matching
-`$USER` and all tcp connections are listed (_ored_).
-
-## Open connection to specific host
-Show open connections to `localhost` for `$USER`:
-```markdown
-lsof -a -u $USER -i @localhost
-```
-
-## Open connection to specific port
-Show open connections to port `:1234` for `$USER`:
-```markdown
-lsof -a -u $USER -i :1234
-```
-
-## IPv4 TCP connections in `ESTABLISHED` state
-```markdown
-lsof -i 4TCP -s TCP:ESTABLISHED
-```
-## List open files in a mounted directory.
-This may help to find which processes keep devices busy when trying to unmount
-and the device is currently busy.
-```markdown
-# Assuming /proc is a mount point.
-lsof /proc
-```