useful.sh

# To run a command on all 4 hosts type: ethm COMMAND
# For example: ethm hostname
# You can also type: 
# 
#   eth COMMAND    # Run COMMAND on elephant, tiger, horse
#   thm COMMAND    # Run COMMAND on tiger, horse, monkey
#   h COMMAND      # Run COMMAND on horse
#   m COMMAND      # Run COMMAND on monkey
# 
# And so on.

function push_useful() {
  scp useful.sh elephant:.
  scp useful.sh tiger:.
  scp useful.sh horse:.
  scp useful.sh monkey:.
}

function kv() {
  for kv1 in $*; do
    set -- `echo $kv1 | tr '=' ' '`
    echo "  <property>"
    echo "    <name>$1</name>"
    echo "    <value>$2</value>"
    echo "  </property>"
  done
}

function xx() {
  HOSTS=$1
  shift
  for i in $HOSTS ; do 
    echo ==$i==
    ssh $i $*
  done
}

alias ethm='xx "elephant tiger horse monkey" '
alias eth='xx "elephant tiger horse" '
alias et='xx "elephant tiger" '
alias thm='xx "tiger horse monkey" '
alias e='xx "elephant" '
alias t='xx "tiger" '
alias h='xx "horse" '
alias m='xx "monkey" '