12.03.2025

Question 1

netstat -tulpn?

Answer 1

netstat - command line tool for network connections and routing tables
-t = shows tcp connections
-u = shows udp connections
-l = shows listening sockets
-n = shows the and numerical addresses and port number
-p = shows the PID (processes ID)

Question 2

ps -aef

Answer 2

-a = shows processes for all users
-e = shows every processes
-f = shows in full format
Best for parent child process relationships

Question 3

ps aux

Answer 3

-a = shows processes for all users
-u = shows user oriented format (like CPU%, memory usage)
-x = shows all processes including the background ones
Best for finding resource heavy process and all processes including daemon

Question 4

How to load a module manually ?

Answer 4

sudo modprobe gtp5g

Question 5

How to remove a module ?

Answer 5

sudo rmmod gtp5g