gistfile1.sh

#!/bin/sh

# $ sshm /fifo/directory host1 host2 host3...
# $ sshm -k /fifo/directory
# $ sshm /fifo/directory -c "ls"

# XXX - extra ssh flags

# set -- $(getopt kc "$@")

# while [ $# -gt 0 ]; do
#   case "$1" in
#     -k) kill=yep;;
#     -c)
#           # TODO
#           ;;
#     --) shift; break;;
#   esac

#   shift
# done

dir=$(mktemp -d /tmp/sshm.XXXXX)

ident_of_host() {
  echo $host | md5 | sed -e 's/\(........\).*/\1/'
}

for host in "$@"; do
  FIFO=${dir}/$(ident_of_host $host).in
  FILE=${dir}/$(ident_of_host $host).out
  mkfifo $FIFO
  (
    (while true; do
         line=$(cat $FIFO)
         if [ "$line" = "exit" ]; then
           exit 1
         else
           echo $line
         fi
       done) | \
      ssh -oStrictHostKeyChecking=no $host "sh" | \
      (while read line; do echo "$host $line"; done)
  ) &
done

mass_murder() {
  echo "killing!"
  for host in "$@"; do
    echo "exit" > ${dir}/$(ident_of_host $host).in
  done

  exit 0
}

trap mass_murder SIGINT

while read line; do
  for host in "$@"; do
    FIFO=${dir}/$(ident_of_host $host).in
    echo $line > $FIFO
  done

  if [ "$line" = "exit" ]; then
    break
  fi
done

mass_murder

# rm -fr $dir