Example project bash file I source after CDing to project direcotry

project.sh

#!/usr/bin/env bash
#
# Shell Project Environment Setup toosl.
#

# Where does this project live.
gitroot=`git rev-parse --show-toplevel`

help() { # List bash functions defined in environment config.
    projectsh_path=$(readlink -f "${BASH_SOURCE[0]}")
    dep_script1="$( dirname "${BASH_SOURCE[0]}" )/src/scripts/build_drupal_site_library.sh"
    dep_script2="$( dirname "${BASH_SOURCE[0]}" )/src/scripts/005_upgrade_via_d2d_migrate/005.sh"
    echo "-- Bash Project Functions Available --"
    echo "$(grep -T "^function" $projectsh_path)" | sed -e 's/function//g'
    echo "$(grep -T "^function" $dep_script1)" | sed -e 's/function//g'
    echo "$(grep -T "^function" $dep_script2)" | sed -e 's/function//g'
}

# Be able to source relative files.
# usage:  source_relative dir1/foo.sh
source_relative() { # Include project relative bash files
  filepath="$( dirname "${BASH_SOURCE[0]}" )/$1"
  [[ -e "$filepath" ]] &&  source $filepath
}

function remove_apple_files() { # remove apple files from project.
  find . -iname "._*" -delete
}
restore_emergency_backup() {
  set -x
  drush arr ./E-bkup.tar.gz --destination=$PWD/stage/web --overwrite
  set +x
}

#
# Project specific functions using Drush, Symfony, Node, whatever.
#
source_relative src/scripts/build_drupal_site_library.sh
source_relative src/scripts/005_upgrade_via_d2d_migrate/005.sh

# Point Drush to include this projects configuration file.
alias drush="drush --config=$gitroot/drushrc.php --local --strict=0"
# list any drush shell-aliases defined within drushrc.
echo
help
echo
echo "-- Drush Shell Aliases --"
drush sha
echo "-- Drush Site Aliases --"
drush sa
echo
add_sitesphp_to_drupal_install