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Bash script which reboot system if ping to a hosts fails

Here is a Bourne Shell script which can automatically reboot a computer if he cannot ping a host.

Code

#! /bin/bash # autoreboot.sh version 1.0 # 2017.01.15 shebangthedolphins.net first version #--------------------------------------------------- # this script automatically reboot a computer if he cannot ping a host #--------------------------------------------------- i=0 LOG="/var/log/auto_reboot.log" IP="10.10.1.22" IP2="10.10.1.20" ping -c 1 -q "$IP" >/dev/null 2>&1 || ping -c 1 -q "$IP2" >/dev/null 2>&1 RES="$?" if [ "$RES" != "0" ]; then while [ "$i" -lt 5 ] do sleep 10s ping -c 1 -q "$IP" >/dev/null 2>&1 || ping -c 1 -q "$IP2" >/dev/null 2>&1 RES="$?" if [ "$RES" != "0" ]; then i=$(( $i + 1 )) echo "$(LC_ALL=en_EN.utf8 date "+%b %e %H:%M:%S") LOG : error n°$i" >> "$LOG" if [ "$i" == "5" ]; then echo "$(LC_ALL=en_EN.utf8 date "+%b %e %H:%M:%S") LOG : reboot" >> "$LOG" reboot fi else echo "$(LC_ALL=en_EN.utf8 date "+%b %e %H:%M:%S") LOG : warning but no reboot" >> "$LOG" exit 0 fi done else echo "$(LC_ALL=en_EN.utf8 date "+%b %e %H:%M:%S") LOG : OK" >> "$LOG" fi
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