zdev_base_check.sh

#!/usr/bin/bash

INSTRUCTIONS_URL='https://www.bing.com'

echo "More information and instructions: $INSTRUCTIONS_URL"
echo
echo "About to check if this system has the bare essentials."
echo
echo "This checks if you have:"
echo "    git"
echo "    python3"
echo
echo "If you are missing any of the above, this script will attempt to install them"
echo "in which case one or more 'sudo apt ...' commands will be run and sudo will"
echo "prompt for your password to allow it to invoke 'sudo'"
echo

read -p "Continue [y|N]? " -n 1 -r
echo    # (optional) move to a new line
if [[ ! $REPLY =~ ^[Yy]$ ]]
then
    echo "Stopping. You will need to rerun this script later."
    exit 1
else
    echo
    echo "Continuing with the checks."
fi

function check_if_installed() {
    prog=$1
    command -v $prog >/dev/null 2>&1
    echo $?
}

function add_missing_apt_package() {
    package=$1
    if [ -z $MISSING_APT_PACKAGES ]; then
        MISSING_APT_PACKAGES=$package
    else
        MISSING_APT_PACKAGES=$MISSING_APT_PACKAGES:$package
    fi
}

# Check for git
found_git=$(check_if_installed git)
if [ $found_git -eq 0 ]; then
    echo "We have git!"
else
    echo "Missing git :-("
    add_missing_apt_package git
fi

# Check for Python Installation
found_python3=$(check_if_installed python3)
if [ $found_python3 -eq 0 ]; then
    echo "We have python3"
else
    echo "Missing python3"
    add_missing_apt_package python3
fi

if [ -z $AZURE_DEVOPS_EXT_PAT ]; then
    echo "Missing the PAT!"
fi

# Check for az
found_az=$(check_if_installed az)
if [ $found_az -eq 0 ]; then
    echo "We have az"
else
    echo "Need to install az somehow"
fi

echo $MISSING_APT_PACKAGES
if [ "$MISSING_APT_PACKAGES" ]; then
    echo 'fake sudo apt update'
    IFS=':'
    read -ra ADDR <<< "$MISSING_APT_PACKAGES"
    for i in "${ADDR[@]}"; do
        echo "fake sudo apt install $i"
    done
    IFS=' '
else
    echo 'No additional packages needed!'
fi