= Check connection =
Simple script to check connection to a host, that in case of failure asks for new IP address through DHCP.

Add entry to crond of account with privileges to get address through '''dhclient''':
 * chmod 755 /<folder>/checkConnection.sh
 * crontab -e
 * * * * * * /<folder>/checkConnection.sh

{{{#!highlight bash
#!/bin/sh
PROG=checkConnection
HOST=host.example.net
ping $HOST -c 5 > /dev/null 
RES=$?
if [ $RES -eq 0 ]; then
  logger "$PROG: Ping to $HOST OK"
else
  logger "$PROG: Ping to $HOST NOK, running dhclient eth0"
  dhclient eth0 -v
  # other seervices that may need restarting
fi
}}}

On Slackware the logger output should appear on '''/var/log/messages'''.