how to shut pppd in script

[Vladimir Popov <mashgrad@usa.net>]

Hi,

The idea is to disconnect from ISP after all scripts in /etc/ppp/ip-up.d/ are
executed. When I run script:

=========
#!/bin/sh
if test -e shut.ppp
then
  echo "It exists"
else
  echo "It doesn't exists"
fi
=========

everything is ok. But when I place script

=========
#!/bin/sh
if test -e shut.ppp
then
  kill 'cat /var/run/ppp0.pid'
fi
=========

in /etc/ppp/ip-up.d it isn't working. If I run in command line  

kill 'cat /var/run/ppp0.pid'

it works. Where I'm wrong?

best regards
Vladimir

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