sshhop

#!/bin/bash

SSH=$(which ssh)

hosts=()
params=()

sep_found=0
for arg in "$@"
do
    if [ $sep_found -eq 0 ] && [ "$arg" = "--" ]; then
        params=("${hosts[@]}")
        hosts=()
        sep_found=1
        continue
    fi

    hosts=("${hosts[@]}" "$arg")
done

if [ ${#hosts[@]} -eq 0 ]; then
    echo "Usage: sshhop [ssh_param1 [ssh_param2 ... ssh_paramN] --] host1 host2 [... hostN]"
    exit 1
fi

last_host_index=$(( ${#hosts[@]} - 1 ))
last_host=${hosts[$last_host_index]}
unset hosts[$last_host_index]

command=

if [ ${#params[@]} -eq 0 ]; then
    params_str=
else
    params_str=$(printf "%q " "${params[@]}")
fi

for host in "${hosts[@]}"
do
    command="${command} ssh -A -t ${params_str} ${host}"
done

command="${command} ssh -A ${params_str} ${last_host}"
echo "$command"

$command