Launch multiple bash terminal tab windows with one command

launch.sh

# Launch multiple bash terminal tab windows by running the command `bash launch.sh`

#!/bin/bash
# File: ~/launch.sh

# Original Code Reference: http://dan.doezema.com/2013/04/programmatically-create-title-tabs-within-the-mac-os-x-terminal-app/
# New-BSD License by Original Author Daniel Doezema http://dan.doezema.com/licenses/new-bsd/

# Modified by Luke Schoen in 2017 to include loading new tabs such as client and server and automatically open webpage in browser.

function new_tab() {
  TAB_NAME=$1
  DELAY=$2
  COMMAND=$3
  osascript \
    -e "tell application \"Terminal\"" \
    -e "tell application \"System Events\" to keystroke \"t\" using {command down}" \
    -e "do script \"$DELAY; printf '\\\e]1;$TAB_NAME\\\a'; $COMMAND\" in front window" \
    -e "end tell" > /dev/null
}

# atom ~/code/apps/myapp_client ~/code/apps/myapp_server

# Create new tabs to load the servers and show logs.
Wait for Mongo, Redis, and Elasticsearch to load
new_tab "Elasticsearch Tab" \
        "echo 'Loading Elasticsearch...'" \
        "elasticsearch"

new_tab "Redis Tab" \
        "echo 'Loading Redis...'" \
        "redis-server /usr/local/etc/redis.conf"

new_tab "Mongo Tab" \
        "echo 'Loading Mongo...'" \
        "mongod --dbpath /usr/local/var/mongodb"

new_tab "Myapp Server Tab" \
        "echo 'Waiting for Elasticsearch, Redis, and Mongo to load...'; sleep 10" \
        "cd ~/code/apps/myapp_server; npm run dev;"

# new_tab "Myapp Server Cron Tab" \
#         "echo 'Waiting for Elasticsearch, Redis, and Mongo to load...'; sleep 10" \
#         "cd ~/code/apps/myapp_server; npm run cron-dev;"

# Create new tab to load the client.
# Wait for Server and dependencies then open web server in browser
new_tab "Myapp Client Browser Tab" \
      "echo 'Waiting for Myapp Server and dependencies...'; sleep 15" \
        "cd ~/code/apps/myapp_client; npm run dev; sleep 15" \
        "open http://localhost:3000;"

# Create new tab to load the client.
# Wait for Server and dependencies then open web server in browser
new_tab "Myapp Files Tab" \
        "cd '/Users/Myusername/Google Drive/To Sync/Myapp'; atom ."