ppp-off

#!/bin/bash
###################################
#
# ppp-off
#                        
#  Linux PPP HOWTO 
# Robert Hart  31.03.1997
# Translated by Ilgiz Kalmetev
#
# Opredelit preryvaemoe ustroistvo
#
if [ "$1" = "" ]; then
   DEVICE=ppp0
else
   DEVICE=$1
fi

####################################
#
# Esly pid-file ppp() yest, togda programma rabotaet.
# Ostanovit ee.
if [ -e /var/run/$DEVICE.pid ]; then
   kill `cat /var/run/$DEVICE.pid`
   echo "OK"
#
# Esly kill ne rabotaet, togda net processa,
# zapushennogo pod etim pid.
# ili sushestvuet postoronnii lock-file.
# popytka ego udalit
   if [ ! "$?" = "0" ]; then
      rm -f /var/run/$DEVICE.pid
      echo "ERROR: Removed stale pid file."
      exit 1
   fi
#
# Otlichno. Pust pppd popravit svoi nedo4et.
   echo "PPP link to $DEVICE terminated."
   exit 0
fi
#
# ppp process ne zapushen dlya ppp()
echo "ERROR: PPP link is not active on $DEVICE"
exit 1