AWS EC2 ssh shell functions

awssh

# Shell functions for ssh-ing into and 
# Features automatic adding of the key file when it is specified in
# AWSSH_KEY. If no user is given in the hostname, it will use the value
# in AWSSH_DEFAULT_USER, or ec2-user if that is not set.
# Sets StrictHostKeyChecking off, so it doesn't ask you if you want to
# connect. Doesn't add the IP to known_hosts, though it will warn you
# every time that it has.

awssh () 
(
  # Config:
  # AWSSH_KEY
  # AWSSH_DEFAULT_USER (ec2-user if not set)

  AWSSH_KEY_OPT=
  if [ -n "$AWSSH_KEY" ]; then
    AWSSH_KEY_OPT="-i $AWSSH_KEY"
  fi;
  if [ -z "$AWSSH_DEFAULT_USER" ]; then
    AWSSH_DEFAULT_USER=ec2-user
  fi
  AWSSH_USER_OPT=
  if ! echo "$1" | $(which grep) -q @; then
    AWSSH_USER_OPT="-o User=$AWSSH_DEFAULT_USER"
  fi;
  ssh $AWSSH_KEY_OPT -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null $AWSSH_USER_OPT "$@"
)

awscp () 
(
  # Config:
  # AWSSH_KEY
  # AWSSH_DEFAULT_USER (ec2-user if not set)

  AWSSH_KEY_OPT=
  if [ -n "$AWSSH_KEY" ]; then
    AWSSH_KEY_OPT="-i $AWSSH_KEY"
  fi;
  if [ -z "$AWSSH_DEFAULT_USER" ]; then
    AWSSH_DEFAULT_USER=ec2-user
  fi
  AWSSH_USER_OPT="-o User=$AWSSH_DEFAULT_USER"
  for var in "$@"
  do
    if echo "$var" | $(which grep) -q @; then
      AWSSH_USER_OPT=
      break
    fi
  done
  scp $AWSSH_KEY_OPT -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null $AWSSH_USER_OPT "$@"
)