profile

SSHAGENT=/usr/bin/ssh-agent
# OSX/some DEs start an agent for you, so just take that
TARGET_SOCK="${SSH_AUTH_SOCK:-$HOME/.ssh/agent.sock}"
[[ ! -S $SSH_AUTH_SOCK ]] && unset SSH_AUTH_SOCK
[[ -r $TARGET_SOCK && -S $TARGET_SOCK && ( $SSH_AUTH_SOCK != $TARGET_SOCK || -z $SSH_AUTH_SOCK ) ]] && export SSH_AUTH_SOCK="$TARGET_SOCK"
if [[ -z $SSH_AUTH_SOCK && ! -S $TARGET_SOCK && -x $SSHAGENT ]]; then
  eval `$SSHAGENT -s -a $TARGET_SOCK`
  # prevent agent from dying whenever the spawning terminal is closed
  #trap "kill $SSH_AGENT_PID" 0
fi
# add key only if it isnt already added. this assumes you are using rsa keys...
# TODO: determine the default key that ssh-add uses programmatically
ssh-add -l|grep -q "$(ssh-keygen -lf ~/.ssh/id_rsa|awk '{print $2}')" || ssh-add

# launch tmux session if we arent already inside one, and tmux is installed
# NOTE: this should live in .profile instead, so its only executed on login shells, not interactive
if [[ -z $TMUX ]] ; then
  if type -p tmux &>/dev/null ; then
    if tmux ls &>/dev/null ; then
      # attach to whatever first session is available to us by default
      # dont exec though, because we want to be able to launch a new session and tmux
      # on a remote host
      tmux a
    else
      # create a new session
      tmux
    fi
  fi
fi