bash script for executing a command via ssh in parallel on multiple servers with colored output

sshmany

#!/bin/bash
#
# Usage:
#   $ echo "host1 host2 host3" | ./sshmany uname -a
#   $ cat myservers | ./sshmany echo Hello world
#
cmd="$@"
servers="$(cat)"
i=37
for server in $servers; do
  	echo "----> $server" | awk -v i=$i '{print "\033[" i "m" $0 "\033[39m"}'
  	i=$(expr $i - 1)
done
echo "====> $cmd"
i=37
for server in $servers; do
  	ssh $server $cmd | awk -v i=$i '{print "      \033[" i "m" $0 "\033[39m"}' &
  	i=$(expr $i - 1)
done
wait