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What would be a good way to make a script run every time my computer connects to the network in Ubuntu? Would I somehow use dbus to do this?

Background: when I'm on the train I run a short Perl script to click a button on the splash page. That way I can immediately use the internet without having to manually visit a pointless website. My script is a near-perfect solution, but it would be perfect if it could run automatically any time I connect to the network.

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not important to the question, but here is the one-liner: alias dodgesplash='perl -e '\''use WWW::Mechanize; $mech = WWW::Mechanize->new(); $mech->get(""); $mech->click();'\''' – rplevy Feb 27 '10 at 1:07
up vote 3 down vote accepted

Put a script in /etc/network/if-up.d and make it executable.

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You can put a script in /etc/NetworkManager/dispatcher.d which will be run whenever a connection goes up or down. See the man page for NetworkManager for the details.

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