dotfilegeeks/utils.sh at master · GeeksHubs/dotfilegeeks · GitHub

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#!/bin/bash

get_os() {

    local os=""
    local kernelName=""

    # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    kernelName="$(uname -s)"

    if [ "$kernelName" == "Darwin" ]; then
        os="macos" || exit 1
    fi
    if [ "$kernelName" == "Linux" ]; then
      # &&  [ -e "/etc/os-release" ]; then
        os="$(. /etc/os-release; printf "%s" "$ID")" || exit 1
    else
        os="$kernelName" || exit 1
    fi


    printf "%s" "$os"

}

get_os_version() {

    local os=""
    local version=""

    # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    os="$(get_os)"

    if [ "$os" == "macos" ]; then
        version="$(sw_vers -productVersion)"
    elif [ -e "/etc/os-release" ]; then
        version="$(. /etc/os-release; printf "%s" "$VERSION_ID")"
    fi


    printf "%s" "$version"

}


# Logging stuff.
e_header()   { echo -e "\n\033[1m$@\033[0m"; }
e_success()  { echo -e " \033[1;32m✔\033[0m  $@"; }
e_error()    { echo -e " \033[1;31m✖\033[0m  $@"; }
e_arrow()    { echo -e " \033[1;33m➜\033[0m  $@"; }


verify_os(){
    declare -r MINIMUM_MACOS_VERSION="10.10"
    declare -r MINIMUM_UBUNTU_VERSION="19.04"

    local os_name="$(get_os)"
    local os_version="$(get_os_version)"

    echo "Versión OS" $os_version "->" $os_name

    # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    # Check if the OS is `macOS` and
    # it's above the required version.

    if [ "$os_name" == "macos" ]; then

        if is_supported_version "$os_version" "$MINIMUM_MACOS_VERSION"; then
            return 0
        else
            printf "Sorry, this script is intended only for macOS %s+" "$MINIMUM_MACOS_VERSION"
        fi

    # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    # Check if the OS is `Ubuntu` and
    # it's above the required version.

    elif [ "$os_name" == "ubuntu" ]; then

        if is_supported_version "$os_version" "$MINIMUM_UBUNTU_VERSION"; then
            return 0
        else
            printf "Sorry, this script is intended only for Ubuntu %s+" "$MINIMUM_UBUNTU_VERSION"
        fi

    # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    else
        printf "Sorry, this script is intended only for macOS and Ubuntu!"
    fi

    return 1

}