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# lsof(8)
```markdown
lsof
-a ......... AND slection filters instead ORing (OR: default)
-p <pid> ... list open file descriptors for process
+fg ........ show file flags for file descripros
-n ......... don't convert network addr to hostnames
-P ......... don't convert network port to know service names
-i <@h[:p]>. show connections to h (hostname|ip addr) with optional port p
```
```markdown
file flags:
R/W/RW ..... read/write/read-write
CR ......... create
AP ......... append
TR ......... truncate
```
# Examples
Show open files with file flags:
```markdown
lsof +fg -p <pid>
```
Show open tcp connections from user:
```markdown
lsof -a -u $USER -i tcp
```
Show open connections to 'localhost' for user:
```markdown
lsof -a -u $USER -i @localhost
```
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