copy to multiple servers with scp

multicopy

#!/bin/bash

USERNAME=username
WORK_DIR=/path/to/workdir

declare -a HOSTS=("hostname1" "hostname2" "hostname3")

function copy_files()
{
  scp -r "$WORK_DIR" "$USERNAME"@"$1":"$WORK_DIR"
}

function install_deps()
{
  if [ -n "$1" ]; then
    ssh "$USERNAME"@"$1" "cd ${WORK_DIR} && npm i --production"
  else
    cd "$WORK_DIR"
    npm i --production
  fi
}

for i in "${HOSTS[@]}"
do
   copy_files "$i"
   install_deps "$i"
done

install_deps