Bash script for scaling a Heroku process via REST (does NOT require the Heroku toolbelt to be installed)

scale_heroku.sh

#!/bin/bash

APP="YOUR_APP"
TOKEN="YOUR_TOKEN"
PROCESS="web"
QTY=

usage()
{
cat << EOF
usage: $0 -n COUNT [OPTIONS]

This script can be used to scale a heroku process.  The -n argument is required.

OPTIONS:
   -h      Show this message
   -a      Application name
   -t      API token that has access to the application
   -p      Process name
   -n      Desired number of processes
EOF
}


while getopts “hatpn:” OPTION
do
     case $OPTION in
         h)
             usage
             exit 1
             ;;
         a)
             APP=$OPTARG
             ;;
         t)
             TOKEN=$OPTARG
             ;;
         p)
             PROCESS=$OPTARG
             ;;
         n)
             QTY=$OPTARG
             ;;
         ?)
             usage
             exit
             ;;
     esac
done

if [[ -z $APP ]] || [[ -z $TOKEN ]] || [[ -z $PROCESS ]] || [[ -z $QTY ]]
then
     usage
     exit 1
fi

curl -H "Accept: application/json" -u :$TOKEN -d "type=$PROCESS" -d "qty=$QTY" -X POST "https://api.heroku.com/apps/$APP/ps/scale"