59 lines
1.1 KiB
Bash
Executable file
59 lines
1.1 KiB
Bash
Executable file
#!/bin/bash
|
|
##
|
|
# Send wake on lan packages to the LAN network
|
|
#
|
|
# includes MAC lookup via DNS and ARP
|
|
#
|
|
# @copyright 2021, Steffen Vogel
|
|
# @license http://www.gnu.org/licenses/gpl.txt GNU Public License
|
|
# @author Steffen Vogel <post@steffenvogel.de>
|
|
# @link https://www.steffenvogel.de/
|
|
##
|
|
|
|
IP_REGEX="[[:digit:]]{1,3}\.[[:digit:]]{1,3}\.[[:digit:]]{1,3}\.[[:digit:]]{1,3}"
|
|
|
|
E_BADARGS=65
|
|
if [[ ! -n "$1" ]]; then
|
|
echo "Usage: $(basename $0) HOST"
|
|
exit $E_BADARGS
|
|
fi
|
|
|
|
if [[ $1 =~ ${IP_REGEX} ]]; then
|
|
IP=$1
|
|
else
|
|
IP=$(dig +short $1 | head -n1)
|
|
|
|
if [[ -z ${IP} ]]; then
|
|
echo "failed to lookup ip"
|
|
exit 4
|
|
else
|
|
echo "$1 has ip: ${IP}"
|
|
fi
|
|
fi
|
|
|
|
|
|
# do a ping to trigger ARP request
|
|
ping -c1 -q ${IP} &>/dev/null
|
|
if [[ $? -eq 0 ]]; then
|
|
echo "host is alive!"
|
|
# exit 2
|
|
fi
|
|
|
|
MAC=$(grep "^${IP}\ " /proc/net/arp | awk '{print $4}')
|
|
|
|
if [[ -z ${MAC} ]]; then
|
|
echo "no mac found!"
|
|
exit 1
|
|
fi
|
|
|
|
echo "$1 has mac: ${MAC}"
|
|
|
|
|
|
if [[ $(id -un) != "root" ]]; then
|
|
echo "$(basename $0) requires root privileges!"
|
|
exit 3
|
|
fi
|
|
|
|
etherwake ${MAC}
|
|
|
|
echo "wol packet has been sent"
|