Check runnong ports ubuntu

$ sudo lsof -i -P -n
$ sudo lsof -i -P -n | grep LISTEN
$ doas lsof -i -P -n | grep LISTEN ### [OpenBSD] ###

sudo lsof -i -P -n | grep LISTEN
sudo netstat -tulpn | grep LISTEN
sudo ss -tulpn | grep LISTEN
sudo lsof -i:22 ## see a specific port such as 22 ##
sudo nmap -sTU -O IP-address-Here

Source: cyberciti.biz

Similar codes

53 votes523 views4 answers
Digits of pi
TypeScript
0 vote226 views1 answer
Keyboard shortcuts to delete whole word using backspace
TypeScript
2 votes281 views2 answers
Eslint no-unused-vars typescript
TypeScript
1 vote184 views1 answer
Python convert two lists with duplicates to dictiona
TypeScript
0 vote194 views1 answer
Filter by list of Ids
TypeScript
0 vote236 views1 answer
Apache poi get all worksheets from file input stream
TypeScript
1 vote159 views1 answer
Ionic pasword visible inside ion-input
TypeScript
1 vote210 views1 answer
Ion popover pass data
TypeScript
0 vote198 views1 answer
Ts vue important
TypeScript
0 vote200 views1 answer
Disable button typescript
TypeScript