pingkeeper (cargo): Command line application that monitorizes that network is reachable (direct tcp connection or ping) and, in case of failure, runs a command. Optionally it can monitor that the command is permanently running and restart it if network is unreachable. 
Keywords: cli|network|tool|linux|macos|daemon|launch-daemon|launcher|monitoring|openvpn|ping|shell|unix|unix-command|unix-shell|vpn