Bash | ssh return value [duplicate]

Question

I am writing a bash script that goes through a number of hosts defined in hosts.list and returns if they are online. I would like to do the same but with ssh. How to I return a value from ssh like boolean if the connection and login was successful.

#!/bin/bash

File="hosts.list"
Hosts=$(cat $File)
declare -i deadhosts
$deadhosts = 0
declare -i counter
$counter = 0
for Host in $Hosts
do
        if ! ping -c 1 -s 1 -W 1 "$Host" 1>/dev/null 2>&1; then
                deadhosts=$((deadhosts+1))
        else
                echo $Host
        fi
        counter=$((counter+1))
done

echo "Mission success"
echo "Scanned Hosts: $counter Dead Hosts: $deadhosts"

$deadhosts = 0 $counter = 0 will result in =: command not found. That's not how you assign a variable in bash. — KamilCuk
– KamilCuk, Commented Oct 18, 2021 at 20:55
Does stackoverflow.com/questions/1405324/… answer your question? — KamilCuk
– KamilCuk, Commented Oct 18, 2021 at 20:56
have you considered using a tool like nmap instead of writing your own script? — Barmar
– Barmar, Commented Oct 18, 2021 at 21:01

Maximilien · Accepted Answer · 2021-10-19 08:11:17Z

-1

There is a question that was ask for the same thing:

How to create a bash script to check the SSH connection?

And you can also find information there:

https://www.golinuxcloud.com/test-ssh-connection/

answered Oct 19, 2021 at 8:11

Maximilien

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1 Comment

klutt Over a year ago

This should be posted as comments and close votes

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