A CLI to check if a port one one or many hosts is online.
cargo install is-onlineCheck if port 443 via IPv4 and IPv6 is reachable within 1 second:
$ is-online --all google.ch -p 443
google.ch:80 is onlineWait for gateway.example.org to be reachable by SSH (assuming it os offline):
$ is-online gateway.example.org --wait
gateway.example.org:22 is offline
gateway.example.org:22 is offline
gateway.example.org:22 is onlineExit with 1 if any host is not reachable via SSH:
$ is-online --fail node-1.example.org node-2.example.org node-3.example.org
Check online status of hosts via stdin:
cat hosts.txt | is-online