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

1 vote160 views1 answer
Bash use cat in sed command
Shell/Bash
1 vote179 views2 answers
Git remove user email
Shell/Bash
9 votes188 views2 answers
Kubectl completion zsh
Shell/Bash
0 vote183 views1 answer
Figma for debian 10
Shell/Bash
22 votes162 views6 answers
Install material-ui
Shell/Bash
0 vote164 views1 answer
Add geckodriver to path linux
Shell/Bash
0 vote168 views2 answers
Git compare two branches with meld
Shell/Bash
0 vote189 views1 answer
Bash check return of command not error
Shell/Bash
0 vote165 views1 answer
Shorten terminal prompt linux
Shell/Bash
0 vote194 views1 answer
Install dicker machine
Shell/Bash