• dream_weasel@sh.itjust.works
    6·
    8 天前

    #!/bin/bash

    ping 255.255.255.0 > checker &

    sleep 5

    kill “$!”

    grep unreachable checker || echo ‘255.255.255.0’

    ping 255.255.255.1 > checker &

    sleep 5

    kill “$!”

    grep unreachable checker || echo ‘255.255.255.1’

    ping 255.255.255.2 > checker &

    sleep 5

    kill “$!”

    grep unreachable checker || echo ‘255.255.255.2’

    …

    Did I do it coach? 😭