dupessh

#!/bin/bash
#
# Duplicate existing ssh session running on current machine.
#
# If there are multiple, display list and take a choice.
#
# Usage:
# dupessh [ <case insensitive pattern to match in command line> ]
#
tempfile=`mktemp /tmp/sshdupe.XXXXXX`
trap "rm $tempfile" exit

if [[ "${1:-}" ]]
then
  pattern="$1"
else
  pattern=.
fi

# grep out bastion host nc proxy connections (for example -
# ssh -q ssh1.vpc1.10gen.cc nc brs-staging-1.vpc1.10gen.cc 22)
filter="grep -v eahdroplet | grep -v ernienet | grep -v ssh.*ssh.*nc.*22 | grep -v ssh.*ssh_tunnel.*\ "
ps -o command -www -a | grep ^ssh | grep -i "$pattern" | bash -c "$filter" | sort -u > $tempfile
count=$(wc -l < $tempfile | tr -d \\t\ )

if [[ $count == 0 ]]
then
  # try without filter
  #
  ps -o command -www -a | grep ^ssh | grep -i "$pattern" | sort -u > $tempfile
  count=$(wc -l < $tempfile | tr -d \\t\ )
  if [[ $count == 0 ]]
  then
    echo "No current sessions!"
    exit 1
  fi
fi

if [[ $count == 1 ]]
then
  num=1
else
  grep -n . $tempfile | sed 's/:/: /g'
  echo -n "Choose session (1-$count): "
  read num
fi
cmd=$(head -n $num $tempfile | tail -1 )
echo "COMMAND:"
echo "$cmd"
eval $cmd
echo "COMMAND:"
echo "$cmd"