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Network Event Triggered Bash Script

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  1. #!/bin/bash
  2. gateway=$(ip route show 0.0.0.0/0 | awk '{print $3}')
  3. mactest=$(arp -n -a $gateway | awk '{print $4}')
  4. targetmac="XX:XX:XX:XX:XX:XX"
  5. homeup="mount -t cifs -o username=USER,password=PASSWORD //SERVER/SHARE /mnt/remote"
  6. awayup="sshfs my.dyndns.tld:/path/to/share /mnt/remote"
  7. down="umount -l /mnt/remote"
  8. if [ $mactest==$targetmac ]
  9. then
  10. 	case "$2" in
  11.         	up)
  12.                		$homeup
  13.         	;;
  14.         	down)
  15.                		$down
  16.         	;;
  17. 	esac
  18. else
  19. 	case "$2" in
  20. 		up)
  21. 			$awayup
  22. 		;;
  23. 		down)
  24. 			$down
  25. 		;;
  26. 	esac
  27. fi
  28.  
  29. exit $?

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