Script to run from crontab to debug CPU lockup issues on a Raspberry Pi

iamalive.sh

#!/bin/sh                                                                                   │
                                                                                            │
LOG=/home/pi/iamalive.log                                                                   │
                                                                                            │
date >> $LOG                                                                                │
uptime >> $LOG                                                                              │
ping -c 1 192.168.1.1 |grep 'transmitted\|rtt' >> $LOG                                      │
echo >> $LOG

Crontab:

# m h  dom mon dow   command                                                                │
* * * * * /home/pi/iamalive.sh