ssh-all

#!/bin/bash

[ -z "$2" ] && {
    echo "This script executes commands and copy files to all nodes"
    echo "connected to a network interface (link-local connection)."
    echo "It uses IPv6 to discover the IPv6 link local addresses" 
	echo ""
	echo "$0 <interface> <-c|-cb|-f> [parameters]"
	echo "  -c  -> execute command"
	echo "  -cb -> execute command in background"
    echo "  -f  -> copy file"
    exit 0
} 

I="$1"
shift
T="$1"
shift

TMP="/tmp/wibed"

echo "Discovering nodes..."
ping6 ff02::2%$I -c 5 -i 1 -s 16 | grep "^24" > $TMP.nodes.tmp
cat $TMP.nodes.tmp  | awk '{print $4}' | sed s/":$"//g | sort -u > $TMP.nodes
echo "-------------------------"
cat $TMP.nodes
echo "-------------------------"

echo

[ "$T" == "-c" ] && {
C="$@"
echo "Executing command $C"
for IP in $(cat $TMP.nodes)
	do
	echo "-------------------------"
	echo "  $IP"
	echo "-------------------------"
	ssh -t $IP%$I $@
	done
}

[ "$T" == "-cb" ] && {
C="$@"
echo "Executing background command $C"
for IP in $(cat $TMP.nodes)
	do
	echo "-------------------------"
	echo "  $IP"
	echo "-------------------------"
	ssh -ft $IP%$I $@
	done
}
[ "$T" == "-f" ] && {
O="$1"
D="$2"
echo "Copying file $O into $D"
for IP in $(cat $TMP.nodes)
	do
	scp -r $O [$IP%$I]:$D
	done
}