How to use conky to kill an application if VPN drops

• First, you need to identify the network interface:

$ ifconfig

The output should look like this:

eth0
lo
tun0

• Second, you need to identify the application name; you can check in the System Monitor[gnome-system-monitor] or with the top command.

• Third, you need to edit the conkyrc by adding this lines:

For conky without VPN status/hidden:

${if_up tun0}${else}${exec killall transmission-gtk}$endif

For conky with VPN status:

${if_up tun0}${color #66BF60}VPN$color${else}${color #FF6640}VPN$color${exec killall transmission-gtk}$endif