lsof.md

title	Lsof
date	2021-02-05 08:12:47 -0800
background	bg-blue-400
tags	port processes utility
categories	Linux Command
intro	This quick reference cheat sheet provides various for using lsof command.
plugins	copyCode

Getting Started

Introduction

lsof meaning LiSt Open Files is used to find out which files are open by which process

$ lsof
$ sudo lsof -u root

Port-specific

$ lsof -i :8080
$ lsof -i :80 -i :22
$ lsof -i TCP:22
$ lsof -i TCP:1-1024
$ lsof -i UDP
$ lsof -i @192.168.1.5

Process-specific

$ lsof -c mysql
$ lsof -c java
$ lsof -c ssh
$ lsof -c nginx
$ lsof -c ssh -c httpd

User-specific

$ lsof -u www-data
$ lsof -u www-data -u ubuntu
$ lsof -i -u ^root # Except certain user

Network-specific

$ lsof -i 4   # IPv4 only
$ lsof -i 6   # IPv6 only

PID-specific

$ lsof -p 1753
$ lsof -p ^3  # Except certain pids

Filename-specific

$ lsof /var/log/messages
$ lsof /etc/passwd

Directory-specific

$ lsof +D /var/log # Within a directory

Kill

$ kill -9 `lsof -t -u apache`
$ kill -9 $(lsof -t -i :8080)