multi-ssh-helper

#!/bin/bash
if [ "$#" -ne 2 ]; then
	echo "Usage: $0 hostfile cmdfile"
	echo "  hostfile contains a list of hostnames or IP addresses"
	echo "  cmdfile contains a list of commands that should be run on the hosts"
	exit 1
fi
HOSTLIST="$1"
CMDLIST="$2"
if [ ! -e "$HOSTLIST" ] || [ ! "$(wc -l < $HOSTLIST)" -ge 1 ]; then
	echo "problem with the supplied hostlist, $HOSTLIST, aborting"
	exit 1
fi
if [ ! -e "$CMDLIST" ] || [ ! "$(wc -l < $CMDLIST)" -ge 1 ]; then
	echo "problem with the supplied list of commands, $CMDLIST, aborting"
	exit 1
fi

declare -a HOSTARR
declare -a CMDARR
readarray -t HOSTARR < $HOSTLIST
readarray -t CMDARR < $CMDLIST
CMDS="$(IFS=';' ; echo "${CMDARR[*]}")"
for HOST in "${HOSTARR[@]}"; do
	echo -e "\n> $HOST\n"
	ssh root@$HOST "$CMDS"
done