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sshopenssh

How to tell ssh not to ask for a password

I have a script which loops through hosts and executes commands like so

while read host; do
  ssh "user@$host" 'echo "$(pwd)"'
done

the problem is some hosts ask for a password, is there a way to exit with 0 if there is a host that asks for a password?

Solution 
  • ssh -o NumberOfPasswordPrompts=0 host.example.com

    But it will exit non-zero... (specifically 255 with OpenSSH_7.9p1, LibreSSL 2.7.3)