Find the answer to your Linux question:
Results 1 to 3 of 3
My provider sometimes kicks me and assigns a new IP address. I'd like to write a little script which displays a message when I fall offline. What is the most ...
Enjoy an ad free experience by logging in. Not a member yet? Register.
  1. #1
    Just Joined!
    Join Date
    Jan 2010
    Posts
    11

    Message when network goes offline


    My provider sometimes kicks me and assigns a new IP address.

    I'd like to write a little script which displays a message when I fall offline. What is the most reliable way to check whether I'm offline with a (bash?) script?

  2. #2
    Just Joined!
    Join Date
    Feb 2009
    Posts
    54
    If online means "connected to the network", ping your default gateway. If it means connected to the Internet, ping an internet server. If it is successful, you are "online".

  3. #3
    Just Joined! NightShade03's Avatar
    Join Date
    Apr 2010
    Location
    New York
    Posts
    18
    #!/bin/bash

    if ! ping -c 1 -w 2 4.2.2.2 &>/dev/null ; then

    echo "The internet appears to be down"
    else

    echo "The internet appears to be up"

    fi

    Save as ping.sh, chmod 775 and you are good to go.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •