Scan for unused ports linux

#!/bin/bash
IP=$1
first_port=$2
last_port=$3
function scanner

{
for ((port=$first_port; port<=$last_port; port++))
        do
                (echo >/dev/tcp/$IP/$port)> /dev/null 2>&1 && echo $port open || echo "$port closed"
        done
}

scanner

Source: superuser.com

Similar codes

12 votes255 views3 answers
Git ignore staged files
Shell/Bash
4 votes271 views2 answers
Remove commits from github
Shell/Bash
2 votes267 views1 answer
Restart discord bot python
Shell/Bash
1 vote256 views1 answer
Bash: ufw : commande introuvable
Shell/Bash
1 vote265 views1 answer
Connect vscode to gitlab
Shell/Bash
5 votes267 views3 answers
Foreach powershell
Shell/Bash
1 vote292 views1 answer
Set default branch to main on git init
Shell/Bash
0 vote275 views1 answer
Rails scaffold
Shell/Bash
23 votes269 views5 answers
Delete node module folder
Shell/Bash
2 votes267 views1 answer
Restart audio ubuntu
Shell/Bash