Improved xkcd universal installer

#!/bin/bash
#===============================================================================
#
#          FILE:  universal_installer_improved.sh
# 
#         USAGE:  ./universal_installer_improved.sh 1 name
# 
#   DESCRIPTION:  based on https://imgs.xkcd.com/comics/universal_install_script.png
#                 https://xkcd.com/1654/
#       OPTION 1: passes installer type
#       OPTION 2: passes package name, url, etc 
#  REQUIREMENTS:  ---
#          BUGS:  ---
#         NOTES:  ---
#        AUTHOR:  Ed Wiget (), ed.wiget@......
#       COMPANY:  
#       VERSION:  1.0
#       CREATED:  03/11/2016 11:58:15 AM EST
#      REVISION:  ---
#===============================================================================
 
if [ $# -ne 2 ]; then
	echo
	echo "    Usage: ${0} <type> {package name[1-11], dir[13], url[14]}"
	echo "       ie. ${0} 5 php-fpm"
	echo 
	echo "types follow..........."
	echo
	echo "1 pip install"
	echo "2 easy_install"
	echo "3 brew install"
	echo "4 npm install"
	echo "5 yum install"
	echo "6 dnf install"
	echo "7 docker run"
	echo "8 pkg install"
	echo "9 apt-get install"
	echo "10 sudo apt-get install"
	echo "11 steamcmd +app_update"
	echo "12 git clone"
	echo "13 make"
	echo "14 curl"
	exit 1
fi
 
if [ "$1" == "" ]; then
        echo    
        echo "types follow..........."
        echo    
        echo "1 pip install"
        echo "2 easy_install"
        echo "3 brew install"
        echo "4 npm install"
        echo "5 yum install"
	echo "6 dnf install"
        echo "7 docker run"
        echo "8 pkg install"
        echo "9 apt-get install"
        echo "10 sudo apt-get install"
        echo "11 steamcmd +app_update"
        echo "12 git clone"
        echo "13 make"
        echo "14 curl"
	echo 
	echo "What type do you wish to use?"
	read ITYPE
else
	ITYPE=$1
fi
 
case $ITYPE in
  1)
    CMD="pip install $2"
    ;;
  2)
    CMD="easy_install $2"
    ;;
  3)
    CMD="brew install $2"
    ;;
  4)
    CMD="npm install $2"
    ;;
  5)
    CMD="yum install $2"
    ;;
  6)
    CMD="dnf install $2"
    ;;
  7)
    CMD="docker run $2"
    ;;
  8)
    CMD="pkg install $2"
    ;;
  9)
    CMD="apt-get install $2"
    ;;
  10)
    CMD="sudo apt-get install $2"
    ;;
  11)
    CMD="steamcmd +app_update $2 validate"
    ;;
  12)
    CMD="git clone https://github.com/$2/$2"
    ;;
  14)
    CMD="cd $2; ./configure ; make ; make install"
    ;;
  15)
    CMD="curl $2 | bash"
    ;;
  *)
    echo "Not a valid choice luser"
    exit
    ;;
esac
 
exec ${CMD}

$ ./universal_installer_improved.sh 10 php-fpm
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  php-common php7.0-cli php7.0-common php7.0-fpm php7.0-json php7.0-opcache php7.0-readline
Suggested packages:
  php-pear php-user-cache
The following NEW packages will be installed:
  php-common php-fpm php7.0-cli php7.0-common php7.0-fpm php7.0-json php7.0-opcache php7.0-readline
0 upgraded, 8 newly installed, 0 to remove and 232 not upgraded.
Need to get 4,895 kB of archives.
After this operation, 20.4 MB of additional disk space will be used.
Do you want to continue? [Y/n]